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Finding the Fourth Proportional to 5,158.20, 7,729.05 and 5,021.52

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Solution

The fourth proportional to 5,158.20, 7,729.05 and 5,021.52 is: 7,524.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.20 : 7,729.05 = 5,021.52 : x
  2. Step 2: Convert to fraction form
    5,158.20/7,729.05 = 5,021.52/x
  3. Step 3: Cross multiply
    5,158.20x = 7,729.05 × 5,021.52
  4. Step 4: Simplify right side
    5,158.20x = 38,811,579.16
  5. Step 5: Solve for x
    x = 38,811,579.16/5,158.20
  6. Step 6: Final answer
    x = 7,524.25

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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.