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Finding the Fourth Proportional to 8,642.19, 12,964.05 and 3,710.69

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Solution

The fourth proportional to 8,642.19, 12,964.05 and 3,710.69 is: 5,566.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.19 : 12,964.05 = 3,710.69 : x
  2. Step 2: Convert to fraction form
    8,642.19/12,964.05 = 3,710.69/x
  3. Step 3: Cross multiply
    8,642.19x = 12,964.05 × 3,710.69
  4. Step 4: Simplify right side
    8,642.19x = 48,105,505.87
  5. Step 5: Solve for x
    x = 48,105,505.87/8,642.19
  6. Step 6: Final answer
    x = 5,566.36

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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.