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Finding the Fourth Proportional to 6,447.71, 8,898.20 and 3,615.99

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Solution

The fourth proportional to 6,447.71, 8,898.20 and 3,615.99 is: 4,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447.71 : 8,898.20 = 3,615.99 : x
  2. Step 2: Convert to fraction form
    6,447.71/8,898.20 = 3,615.99/x
  3. Step 3: Cross multiply
    6,447.71x = 8,898.20 × 3,615.99
  4. Step 4: Simplify right side
    6,447.71x = 32,175,757.73
  5. Step 5: Solve for x
    x = 32,175,757.73/6,447.71
  6. Step 6: Final answer
    x = 4,990.27

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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.