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Finding the Fourth Proportional to 8,913.76, 12,302.08 and 5,137.14

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Solution

The fourth proportional to 8,913.76, 12,302.08 and 5,137.14 is: 7,089.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.76 : 12,302.08 = 5,137.14 : x
  2. Step 2: Convert to fraction form
    8,913.76/12,302.08 = 5,137.14/x
  3. Step 3: Cross multiply
    8,913.76x = 12,302.08 × 5,137.14
  4. Step 4: Simplify right side
    8,913.76x = 63,197,507.25
  5. Step 5: Solve for x
    x = 63,197,507.25/8,913.76
  6. Step 6: Final answer
    x = 7,089.88

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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.