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Finding the Fourth Proportional to 8,640.03, 12,952.53 and 4,477.85

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Solution

The fourth proportional to 8,640.03, 12,952.53 and 4,477.85 is: 6,712.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.03 : 12,952.53 = 4,477.85 : x
  2. Step 2: Convert to fraction form
    8,640.03/12,952.53 = 4,477.85/x
  3. Step 3: Cross multiply
    8,640.03x = 12,952.53 × 4,477.85
  4. Step 4: Simplify right side
    8,640.03x = 57,999,421.70
  5. Step 5: Solve for x
    x = 57,999,421.70/8,640.03
  6. Step 6: Final answer
    x = 6,712.87

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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.