Home / 6,931.38-9,565.29-3,947.21

Finding the Fourth Proportional to 6,931.38, 9,565.29 and 3,947.21

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Solution

The fourth proportional to 6,931.38, 9,565.29 and 3,947.21 is: 5,447.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,931.38 : 9,565.29 = 3,947.21 : x
  2. Step 2: Convert to fraction form
    6,931.38/9,565.29 = 3,947.21/x
  3. Step 3: Cross multiply
    6,931.38x = 9,565.29 × 3,947.21
  4. Step 4: Simplify right side
    6,931.38x = 37,756,188.60
  5. Step 5: Solve for x
    x = 37,756,188.60/6,931.38
  6. Step 6: Final answer
    x = 5,447.14

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Double scale
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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.