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Finding the Fourth Proportional to 8,607.47, 12,906.05 and 2,983.28

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Solution

The fourth proportional to 8,607.47, 12,906.05 and 2,983.28 is: 4,473.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.47 : 12,906.05 = 2,983.28 : x
  2. Step 2: Convert to fraction form
    8,607.47/12,906.05 = 2,983.28/x
  3. Step 3: Cross multiply
    8,607.47x = 12,906.05 × 2,983.28
  4. Step 4: Simplify right side
    8,607.47x = 38,502,345.93
  5. Step 5: Solve for x
    x = 38,502,345.93/8,607.47
  6. Step 6: Final answer
    x = 4,473.13

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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.