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Finding the Fourth Proportional to 7,751.61, 10,699.61 and 7,354.87

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Solution

The fourth proportional to 7,751.61, 10,699.61 and 7,354.87 is: 10,151.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.61 : 10,699.61 = 7,354.87 : x
  2. Step 2: Convert to fraction form
    7,751.61/10,699.61 = 7,354.87/x
  3. Step 3: Cross multiply
    7,751.61x = 10,699.61 × 7,354.87
  4. Step 4: Simplify right side
    7,751.61x = 78,694,177.08
  5. Step 5: Solve for x
    x = 78,694,177.08/7,751.61
  6. Step 6: Final answer
    x = 10,151.98

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1.5x scale

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.