Home / 6,987.12-9,642.40-3,843.52

Finding the Fourth Proportional to 6,987.12, 9,642.40 and 3,843.52

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Solution

The fourth proportional to 6,987.12, 9,642.40 and 3,843.52 is: 5,304.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.12 : 9,642.40 = 3,843.52 : x
  2. Step 2: Convert to fraction form
    6,987.12/9,642.40 = 3,843.52/x
  3. Step 3: Cross multiply
    6,987.12x = 9,642.40 × 3,843.52
  4. Step 4: Simplify right side
    6,987.12x = 37,060,757.25
  5. Step 5: Solve for x
    x = 37,060,757.25/6,987.12
  6. Step 6: Final answer
    x = 5,304.15

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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.