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Finding the Fourth Proportional to 8,937.04, 12,343.88 and 7,815.12

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Solution

The fourth proportional to 8,937.04, 12,343.88 and 7,815.12 is: 10,794.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,937.04 : 12,343.88 = 7,815.12 : x
  2. Step 2: Convert to fraction form
    8,937.04/12,343.88 = 7,815.12/x
  3. Step 3: Cross multiply
    8,937.04x = 12,343.88 × 7,815.12
  4. Step 4: Simplify right side
    8,937.04x = 96,468,903.47
  5. Step 5: Solve for x
    x = 96,468,903.47/8,937.04
  6. Step 6: Final answer
    x = 10,794.28

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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.