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Finding the Fourth Proportional to 9,543.75, 13,170.38 and 5,352

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Solution

The fourth proportional to 9,543.75, 13,170.38 and 5,352 is: 7,385.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,543.75 : 13,170.38 = 5,352 : x
  2. Step 2: Convert to fraction form
    9,543.75/13,170.38 = 5,352/x
  3. Step 3: Cross multiply
    9,543.75x = 13,170.38 × 5,352
  4. Step 4: Simplify right side
    9,543.75x = 70,487,887.14
  5. Step 5: Solve for x
    x = 70,487,887.14/9,543.75
  6. Step 6: Final answer
    x = 7,385.76

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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.