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Finding the Fourth Proportional to 5,277.60, 7,909.11 and 5,119.92

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Solution

The fourth proportional to 5,277.60, 7,909.11 and 5,119.92 is: 7,672.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,277.60 : 7,909.11 = 5,119.92 : x
  2. Step 2: Convert to fraction form
    5,277.60/7,909.11 = 5,119.92/x
  3. Step 3: Cross multiply
    5,277.60x = 7,909.11 × 5,119.92
  4. Step 4: Simplify right side
    5,277.60x = 40,494,010.47
  5. Step 5: Solve for x
    x = 40,494,010.47/5,277.60
  6. Step 6: Final answer
    x = 7,672.81

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1.5x scale

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.