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Finding the Fourth Proportional to 8,562.99, 12,820.17 and 5,604.87

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Solution

The fourth proportional to 8,562.99, 12,820.17 and 5,604.87 is: 8,391.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,562.99 : 12,820.17 = 5,604.87 : x
  2. Step 2: Convert to fraction form
    8,562.99/12,820.17 = 5,604.87/x
  3. Step 3: Cross multiply
    8,562.99x = 12,820.17 × 5,604.87
  4. Step 4: Simplify right side
    8,562.99x = 71,855,386.23
  5. Step 5: Solve for x
    x = 71,855,386.23/8,562.99
  6. Step 6: Final answer
    x = 8,391.39

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.