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Finding the Fourth Proportional to 8,491.68, 12,737.93 and 3,561.48

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Solution

The fourth proportional to 8,491.68, 12,737.93 and 3,561.48 is: 5,342.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.68 : 12,737.93 = 3,561.48 : x
  2. Step 2: Convert to fraction form
    8,491.68/12,737.93 = 3,561.48/x
  3. Step 3: Cross multiply
    8,491.68x = 12,737.93 × 3,561.48
  4. Step 4: Simplify right side
    8,491.68x = 45,365,882.94
  5. Step 5: Solve for x
    x = 45,365,882.94/8,491.68
  6. Step 6: Final answer
    x = 5,342.39

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1.5x scale

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.