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Finding the Fourth Proportional to 7,687.95, 10,610.02 and 4,331.42

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Solution

The fourth proportional to 7,687.95, 10,610.02 and 4,331.42 is: 5,977.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.95 : 10,610.02 = 4,331.42 : x
  2. Step 2: Convert to fraction form
    7,687.95/10,610.02 = 4,331.42/x
  3. Step 3: Cross multiply
    7,687.95x = 10,610.02 × 4,331.42
  4. Step 4: Simplify right side
    7,687.95x = 45,956,452.83
  5. Step 5: Solve for x
    x = 45,956,452.83/7,687.95
  6. Step 6: Final answer
    x = 5,977.73

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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.