Home / 10,931.46-16,397.19-3,140.26

Finding the Fourth Proportional to 10,931.46, 16,397.19 and 3,140.26

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Solution

The fourth proportional to 10,931.46, 16,397.19 and 3,140.26 is: 4,710.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.46 : 16,397.19 = 3,140.26 : x
  2. Step 2: Convert to fraction form
    10,931.46/16,397.19 = 3,140.26/x
  3. Step 3: Cross multiply
    10,931.46x = 16,397.19 × 3,140.26
  4. Step 4: Simplify right side
    10,931.46x = 51,491,439.87
  5. Step 5: Solve for x
    x = 51,491,439.87/10,931.46
  6. Step 6: Final answer
    x = 4,710.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.