Home / 6,987.18-9,641.78-3,843.57

Finding the Fourth Proportional to 6,987.18, 9,641.78 and 3,843.57

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Solution

The fourth proportional to 6,987.18, 9,641.78 and 3,843.57 is: 5,303.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.18 : 9,641.78 = 3,843.57 : x
  2. Step 2: Convert to fraction form
    6,987.18/9,641.78 = 3,843.57/x
  3. Step 3: Cross multiply
    6,987.18x = 9,641.78 × 3,843.57
  4. Step 4: Simplify right side
    6,987.18x = 37,058,788.93
  5. Step 5: Solve for x
    x = 37,058,788.93/6,987.18
  6. Step 6: Final answer
    x = 5,303.83

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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.