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Finding the Fourth Proportional to 6,462.90, 8,909.78 and 4,338.80

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Solution

The fourth proportional to 6,462.90, 8,909.78 and 4,338.80 is: 5,981.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,462.90 : 8,909.78 = 4,338.80 : x
  2. Step 2: Convert to fraction form
    6,462.90/8,909.78 = 4,338.80/x
  3. Step 3: Cross multiply
    6,462.90x = 8,909.78 × 4,338.80
  4. Step 4: Simplify right side
    6,462.90x = 38,657,753.46
  5. Step 5: Solve for x
    x = 38,657,753.46/6,462.90
  6. Step 6: Final answer
    x = 5,981.49

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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.