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Finding the Fourth Proportional to 5,142.76, 7,699.02 and 3,188.68

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Solution

The fourth proportional to 5,142.76, 7,699.02 and 3,188.68 is: 4,773.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.76 : 7,699.02 = 3,188.68 : x
  2. Step 2: Convert to fraction form
    5,142.76/7,699.02 = 3,188.68/x
  3. Step 3: Cross multiply
    5,142.76x = 7,699.02 × 3,188.68
  4. Step 4: Simplify right side
    5,142.76x = 24,549,711.09
  5. Step 5: Solve for x
    x = 24,549,711.09/5,142.76
  6. Step 6: Final answer
    x = 4,773.65

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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.