Home / 3,101.37-4,280.68-1,921.74

Finding the Fourth Proportional to 3,101.37, 4,280.68 and 1,921.74

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Solution

The fourth proportional to 3,101.37, 4,280.68 and 1,921.74 is: 2,652.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.37 : 4,280.68 = 1,921.74 : x
  2. Step 2: Convert to fraction form
    3,101.37/4,280.68 = 1,921.74/x
  3. Step 3: Cross multiply
    3,101.37x = 4,280.68 × 1,921.74
  4. Step 4: Simplify right side
    3,101.37x = 8,226,353.98
  5. Step 5: Solve for x
    x = 8,226,353.98/3,101.37
  6. Step 6: Final answer
    x = 2,652.49

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Half scale
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Double scale
Find fourth proportional to 3,102.37, 4,282.06 and 1,922.74
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.