Home / 8,915.04-12,302.97-5,139.12

Finding the Fourth Proportional to 8,915.04, 12,302.97 and 5,139.12

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Solution

The fourth proportional to 8,915.04, 12,302.97 and 5,139.12 is: 7,092.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.04 : 12,302.97 = 5,139.12 : x
  2. Step 2: Convert to fraction form
    8,915.04/12,302.97 = 5,139.12/x
  3. Step 3: Cross multiply
    8,915.04x = 12,302.97 × 5,139.12
  4. Step 4: Simplify right side
    8,915.04x = 63,226,439.19
  5. Step 5: Solve for x
    x = 63,226,439.19/8,915.04
  6. Step 6: Final answer
    x = 7,092.11

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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.