Home / 8,721.68-13,082.97-2,878.74

Finding the Fourth Proportional to 8,721.68, 13,082.97 and 2,878.74

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Solution

The fourth proportional to 8,721.68, 13,082.97 and 2,878.74 is: 4,318.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.68 : 13,082.97 = 2,878.74 : x
  2. Step 2: Convert to fraction form
    8,721.68/13,082.97 = 2,878.74/x
  3. Step 3: Cross multiply
    8,721.68x = 13,082.97 × 2,878.74
  4. Step 4: Simplify right side
    8,721.68x = 37,662,454.66
  5. Step 5: Solve for x
    x = 37,662,454.66/8,721.68
  6. Step 6: Final answer
    x = 4,318.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.