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Finding the Fourth Proportional to 8,551.18, 12,803.17 and 4,382.31

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Solution

The fourth proportional to 8,551.18, 12,803.17 and 4,382.31 is: 6,561.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,551.18 : 12,803.17 = 4,382.31 : x
  2. Step 2: Convert to fraction form
    8,551.18/12,803.17 = 4,382.31/x
  3. Step 3: Cross multiply
    8,551.18x = 12,803.17 × 4,382.31
  4. Step 4: Simplify right side
    8,551.18x = 56,107,459.92
  5. Step 5: Solve for x
    x = 56,107,459.92/8,551.18
  6. Step 6: Final answer
    x = 6,561.37

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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.