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Finding the Fourth Proportional to 7,320.50, 10,102.32 and 4,008.50

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Solution

The fourth proportional to 7,320.50, 10,102.32 and 4,008.50 is: 5,531.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.50 : 10,102.32 = 4,008.50 : x
  2. Step 2: Convert to fraction form
    7,320.50/10,102.32 = 4,008.50/x
  3. Step 3: Cross multiply
    7,320.50x = 10,102.32 × 4,008.50
  4. Step 4: Simplify right side
    7,320.50x = 40,495,149.72
  5. Step 5: Solve for x
    x = 40,495,149.72/7,320.50
  6. Step 6: Final answer
    x = 5,531.75

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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.