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Finding the Fourth Proportional to 8,442.80, 12,666.02 and 4,546.30

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Solution

The fourth proportional to 8,442.80, 12,666.02 and 4,546.30 is: 6,820.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.80 : 12,666.02 = 4,546.30 : x
  2. Step 2: Convert to fraction form
    8,442.80/12,666.02 = 4,546.30/x
  3. Step 3: Cross multiply
    8,442.80x = 12,666.02 × 4,546.30
  4. Step 4: Simplify right side
    8,442.80x = 57,583,526.73
  5. Step 5: Solve for x
    x = 57,583,526.73/8,442.80
  6. Step 6: Final answer
    x = 6,820.43

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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.