Home / 6,987.12-9,641.96-3,843.12

Finding the Fourth Proportional to 6,987.12, 9,641.96 and 3,843.12

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Solution

The fourth proportional to 6,987.12, 9,641.96 and 3,843.12 is: 5,303.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.12 : 9,641.96 = 3,843.12 : x
  2. Step 2: Convert to fraction form
    6,987.12/9,641.96 = 3,843.12/x
  3. Step 3: Cross multiply
    6,987.12x = 9,641.96 × 3,843.12
  4. Step 4: Simplify right side
    6,987.12x = 37,055,209.32
  5. Step 5: Solve for x
    x = 37,055,209.32/6,987.12
  6. Step 6: Final answer
    x = 5,303.36

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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.