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Finding the Fourth Proportional to 3,988.50, 5,504.13 and 2,332.50

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Solution

The fourth proportional to 3,988.50, 5,504.13 and 2,332.50 is: 3,218.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.50 : 5,504.13 = 2,332.50 : x
  2. Step 2: Convert to fraction form
    3,988.50/5,504.13 = 2,332.50/x
  3. Step 3: Cross multiply
    3,988.50x = 5,504.13 × 2,332.50
  4. Step 4: Simplify right side
    3,988.50x = 12,838,383.23
  5. Step 5: Solve for x
    x = 12,838,383.23/3,988.50
  6. Step 6: Final answer
    x = 3,218.85

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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.