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Finding the Fourth Proportional to 5,287.61, 7,932.47 and 2,365.89

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Solution

The fourth proportional to 5,287.61, 7,932.47 and 2,365.89 is: 3,549.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.61 : 7,932.47 = 2,365.89 : x
  2. Step 2: Convert to fraction form
    5,287.61/7,932.47 = 2,365.89/x
  3. Step 3: Cross multiply
    5,287.61x = 7,932.47 × 2,365.89
  4. Step 4: Simplify right side
    5,287.61x = 18,767,339.62
  5. Step 5: Solve for x
    x = 18,767,339.62/5,287.61
  6. Step 6: Final answer
    x = 3,549.31

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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.