Home / 6,724.16-9,279.40-3,891.52

Finding the Fourth Proportional to 6,724.16, 9,279.40 and 3,891.52

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Solution

The fourth proportional to 6,724.16, 9,279.40 and 3,891.52 is: 5,370.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,724.16 : 9,279.40 = 3,891.52 : x
  2. Step 2: Convert to fraction form
    6,724.16/9,279.40 = 3,891.52/x
  3. Step 3: Cross multiply
    6,724.16x = 9,279.40 × 3,891.52
  4. Step 4: Simplify right side
    6,724.16x = 36,110,970.69
  5. Step 5: Solve for x
    x = 36,110,970.69/6,724.16
  6. Step 6: Final answer
    x = 5,370.33

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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.