Home / 5,321.80-7,987.62-2,691.16

Finding the Fourth Proportional to 5,321.80, 7,987.62 and 2,691.16

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Solution

The fourth proportional to 5,321.80, 7,987.62 and 2,691.16 is: 4,039.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321.80 : 7,987.62 = 2,691.16 : x
  2. Step 2: Convert to fraction form
    5,321.80/7,987.62 = 2,691.16/x
  3. Step 3: Cross multiply
    5,321.80x = 7,987.62 × 2,691.16
  4. Step 4: Simplify right side
    5,321.80x = 21,495,963.44
  5. Step 5: Solve for x
    x = 21,495,963.44/5,321.80
  6. Step 6: Final answer
    x = 4,039.23

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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.