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Finding the Fourth Proportional to 6,339.70, 8,748.96 and 3,545.20

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Solution

The fourth proportional to 6,339.70, 8,748.96 and 3,545.20 is: 4,892.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,339.70 : 8,748.96 = 3,545.20 : x
  2. Step 2: Convert to fraction form
    6,339.70/8,748.96 = 3,545.20/x
  3. Step 3: Cross multiply
    6,339.70x = 8,748.96 × 3,545.20
  4. Step 4: Simplify right side
    6,339.70x = 31,016,812.99
  5. Step 5: Solve for x
    x = 31,016,812.99/6,339.70
  6. Step 6: Final answer
    x = 4,892.47

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1.5x scale

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.