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Finding the Fourth Proportional to 2,711.79, 3,742.29 and 1,532.79

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Solution

The fourth proportional to 2,711.79, 3,742.29 and 1,532.79 is: 2,115.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,711.79 : 3,742.29 = 1,532.79 : x
  2. Step 2: Convert to fraction form
    2,711.79/3,742.29 = 1,532.79/x
  3. Step 3: Cross multiply
    2,711.79x = 3,742.29 × 1,532.79
  4. Step 4: Simplify right side
    2,711.79x = 5,736,144.69
  5. Step 5: Solve for x
    x = 5,736,144.69/2,711.79
  6. Step 6: Final answer
    x = 2,115.26

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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.