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Finding the Fourth Proportional to 2,666.96, 3,680.44 and 1,472

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Solution

The fourth proportional to 2,666.96, 3,680.44 and 1,472 is: 2,031.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.96 : 3,680.44 = 1,472 : x
  2. Step 2: Convert to fraction form
    2,666.96/3,680.44 = 1,472/x
  3. Step 3: Cross multiply
    2,666.96x = 3,680.44 × 1,472
  4. Step 4: Simplify right side
    2,666.96x = 5,417,607.68
  5. Step 5: Solve for x
    x = 5,417,607.68/2,666.96
  6. Step 6: Final answer
    x = 2,031.38

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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.