Home / 7,132.12-9,841.77-3,987.70

Finding the Fourth Proportional to 7,132.12, 9,841.77 and 3,987.70

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Solution

The fourth proportional to 7,132.12, 9,841.77 and 3,987.70 is: 5,502.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,132.12 : 9,841.77 = 3,987.70 : x
  2. Step 2: Convert to fraction form
    7,132.12/9,841.77 = 3,987.70/x
  3. Step 3: Cross multiply
    7,132.12x = 9,841.77 × 3,987.70
  4. Step 4: Simplify right side
    7,132.12x = 39,246,026.23
  5. Step 5: Solve for x
    x = 39,246,026.23/7,132.12
  6. Step 6: Final answer
    x = 5,502.72

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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.