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Finding the Fourth Proportional to 8,989.17, 12,405.11 and 5,010.54

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Solution

The fourth proportional to 8,989.17, 12,405.11 and 5,010.54 is: 6,914.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.17 : 12,405.11 = 5,010.54 : x
  2. Step 2: Convert to fraction form
    8,989.17/12,405.11 = 5,010.54/x
  3. Step 3: Cross multiply
    8,989.17x = 12,405.11 × 5,010.54
  4. Step 4: Simplify right side
    8,989.17x = 62,156,237.83
  5. Step 5: Solve for x
    x = 62,156,237.83/8,989.17
  6. Step 6: Final answer
    x = 6,914.57

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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.