Home / 7,131.17-9,841.04-3,987.35

Finding the Fourth Proportional to 7,131.17, 9,841.04 and 3,987.35

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Solution

The fourth proportional to 7,131.17, 9,841.04 and 3,987.35 is: 5,502.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.17 : 9,841.04 = 3,987.35 : x
  2. Step 2: Convert to fraction form
    7,131.17/9,841.04 = 3,987.35/x
  3. Step 3: Cross multiply
    7,131.17x = 9,841.04 × 3,987.35
  4. Step 4: Simplify right side
    7,131.17x = 39,239,601.70
  5. Step 5: Solve for x
    x = 39,239,601.70/7,131.17
  6. Step 6: Final answer
    x = 5,502.55

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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.