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Finding the Fourth Proportional to 2,502.96, 3,754.20 and 771.12

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Solution

The fourth proportional to 2,502.96, 3,754.20 and 771.12 is: 1,156.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,502.96 : 3,754.20 = 771.12 : x
  2. Step 2: Convert to fraction form
    2,502.96/3,754.20 = 771.12/x
  3. Step 3: Cross multiply
    2,502.96x = 3,754.20 × 771.12
  4. Step 4: Simplify right side
    2,502.96x = 2,894,938.70
  5. Step 5: Solve for x
    x = 2,894,938.70/2,502.96
  6. Step 6: Final answer
    x = 1,156.61

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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.