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Finding the Fourth Proportional to 6,491.52, 8,958.60 and 3,658.71

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Solution

The fourth proportional to 6,491.52, 8,958.60 and 3,658.71 is: 5,049.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,491.52 : 8,958.60 = 3,658.71 : x
  2. Step 2: Convert to fraction form
    6,491.52/8,958.60 = 3,658.71/x
  3. Step 3: Cross multiply
    6,491.52x = 8,958.60 × 3,658.71
  4. Step 4: Simplify right side
    6,491.52x = 32,776,919.41
  5. Step 5: Solve for x
    x = 32,776,919.41/6,491.52
  6. Step 6: Final answer
    x = 5,049.19

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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.