Home / 8,116.61-11,195.15-5,278.74

Finding the Fourth Proportional to 8,116.61, 11,195.15 and 5,278.74

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Solution

The fourth proportional to 8,116.61, 11,195.15 and 5,278.74 is: 7,280.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,116.61 : 11,195.15 = 5,278.74 : x
  2. Step 2: Convert to fraction form
    8,116.61/11,195.15 = 5,278.74/x
  3. Step 3: Cross multiply
    8,116.61x = 11,195.15 × 5,278.74
  4. Step 4: Simplify right side
    8,116.61x = 59,096,286.11
  5. Step 5: Solve for x
    x = 59,096,286.11/8,116.61
  6. Step 6: Final answer
    x = 7,280.91

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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.