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Finding the Fourth Proportional to 2,666.92, 4,000.40 and 1,742.92

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Solution

The fourth proportional to 2,666.92, 4,000.40 and 1,742.92 is: 2,614.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.92 : 4,000.40 = 1,742.92 : x
  2. Step 2: Convert to fraction form
    2,666.92/4,000.40 = 1,742.92/x
  3. Step 3: Cross multiply
    2,666.92x = 4,000.40 × 1,742.92
  4. Step 4: Simplify right side
    2,666.92x = 6,972,377.17
  5. Step 5: Solve for x
    x = 6,972,377.17/2,666.92
  6. Step 6: Final answer
    x = 2,614.39

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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.