Home / 5,321.68-7,987.45-2,691.04

Finding the Fourth Proportional to 5,321.68, 7,987.45 and 2,691.04

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Solution

The fourth proportional to 5,321.68, 7,987.45 and 2,691.04 is: 4,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321.68 : 7,987.45 = 2,691.04 : x
  2. Step 2: Convert to fraction form
    5,321.68/7,987.45 = 2,691.04/x
  3. Step 3: Cross multiply
    5,321.68x = 7,987.45 × 2,691.04
  4. Step 4: Simplify right side
    5,321.68x = 21,494,547.45
  5. Step 5: Solve for x
    x = 21,494,547.45/5,321.68
  6. Step 6: Final answer
    x = 4,039.05

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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.