Home / 1,990.27-2,746.86-1,193.63

Finding the Fourth Proportional to 1,990.27, 2,746.86 and 1,193.63

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Solution

The fourth proportional to 1,990.27, 2,746.86 and 1,193.63 is: 1,647.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.27 : 2,746.86 = 1,193.63 : x
  2. Step 2: Convert to fraction form
    1,990.27/2,746.86 = 1,193.63/x
  3. Step 3: Cross multiply
    1,990.27x = 2,746.86 × 1,193.63
  4. Step 4: Simplify right side
    1,990.27x = 3,278,728.53
  5. Step 5: Solve for x
    x = 3,278,728.53/1,990.27
  6. Step 6: Final answer
    x = 1,647.38

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Half scale
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Double scale
Find fourth proportional to 1,991.27, 2,748.24 and 1,194.63
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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.