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Finding the Fourth Proportional to 3,564.78, 5,347.18 and 1,615.62

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Solution

The fourth proportional to 3,564.78, 5,347.18 and 1,615.62 is: 2,423.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,564.78 : 5,347.18 = 1,615.62 : x
  2. Step 2: Convert to fraction form
    3,564.78/5,347.18 = 1,615.62/x
  3. Step 3: Cross multiply
    3,564.78x = 5,347.18 × 1,615.62
  4. Step 4: Simplify right side
    3,564.78x = 8,639,010.95
  5. Step 5: Solve for x
    x = 8,639,010.95/3,564.78
  6. Step 6: Final answer
    x = 2,423.43

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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.