Home / 3,151.94-4,351.02-1,972.76

Finding the Fourth Proportional to 3,151.94, 4,351.02 and 1,972.76

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Solution

The fourth proportional to 3,151.94, 4,351.02 and 1,972.76 is: 2,723.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.94 : 4,351.02 = 1,972.76 : x
  2. Step 2: Convert to fraction form
    3,151.94/4,351.02 = 1,972.76/x
  3. Step 3: Cross multiply
    3,151.94x = 4,351.02 × 1,972.76
  4. Step 4: Simplify right side
    3,151.94x = 8,583,518.22
  5. Step 5: Solve for x
    x = 8,583,518.22/3,151.94
  6. Step 6: Final answer
    x = 2,723.25

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Find fourth proportional to 1,575.97, 2,175.51 and 986.38
Half scale
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Double scale
Find fourth proportional to 3,152.94, 4,352.40 and 1,973.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.