Home / 7,641.12-10,517.88-6,694.68

Finding the Fourth Proportional to 7,641.12, 10,517.88 and 6,694.68

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Solution

The fourth proportional to 7,641.12, 10,517.88 and 6,694.68 is: 9,215.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,641.12 : 10,517.88 = 6,694.68 : x
  2. Step 2: Convert to fraction form
    7,641.12/10,517.88 = 6,694.68/x
  3. Step 3: Cross multiply
    7,641.12x = 10,517.88 × 6,694.68
  4. Step 4: Simplify right side
    7,641.12x = 70,413,840.88
  5. Step 5: Solve for x
    x = 70,413,840.88/7,641.12
  6. Step 6: Final answer
    x = 9,215.12

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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.