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Finding the Fourth Proportional to 8,976.56, 12,387.84 and 4,997.93

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Solution

The fourth proportional to 8,976.56, 12,387.84 and 4,997.93 is: 6,897.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.56 : 12,387.84 = 4,997.93 : x
  2. Step 2: Convert to fraction form
    8,976.56/12,387.84 = 4,997.93/x
  3. Step 3: Cross multiply
    8,976.56x = 12,387.84 × 4,997.93
  4. Step 4: Simplify right side
    8,976.56x = 61,913,557.17
  5. Step 5: Solve for x
    x = 61,913,557.17/8,976.56
  6. Step 6: Final answer
    x = 6,897.25

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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.