Home / 9,358.86-12,915.90-5,381.04

Finding the Fourth Proportional to 9,358.86, 12,915.90 and 5,381.04

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Solution

The fourth proportional to 9,358.86, 12,915.90 and 5,381.04 is: 7,426.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,358.86 : 12,915.90 = 5,381.04 : x
  2. Step 2: Convert to fraction form
    9,358.86/12,915.90 = 5,381.04/x
  3. Step 3: Cross multiply
    9,358.86x = 12,915.90 × 5,381.04
  4. Step 4: Simplify right side
    9,358.86x = 69,500,974.54
  5. Step 5: Solve for x
    x = 69,500,974.54/9,358.86
  6. Step 6: Final answer
    x = 7,426.22

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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.