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Finding the Fourth Proportional to 5,489.95, 7,575.65 and 3,251.45

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Solution

The fourth proportional to 5,489.95, 7,575.65 and 3,251.45 is: 4,486.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.95 : 7,575.65 = 3,251.45 : x
  2. Step 2: Convert to fraction form
    5,489.95/7,575.65 = 3,251.45/x
  3. Step 3: Cross multiply
    5,489.95x = 7,575.65 × 3,251.45
  4. Step 4: Simplify right side
    5,489.95x = 24,631,847.19
  5. Step 5: Solve for x
    x = 24,631,847.19/5,489.95
  6. Step 6: Final answer
    x = 4,486.72

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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.