Home / 9,891.08-13,649.72-5,414.88

Finding the Fourth Proportional to 9,891.08, 13,649.72 and 5,414.88

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Solution

The fourth proportional to 9,891.08, 13,649.72 and 5,414.88 is: 7,472.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,891.08 : 13,649.72 = 5,414.88 : x
  2. Step 2: Convert to fraction form
    9,891.08/13,649.72 = 5,414.88/x
  3. Step 3: Cross multiply
    9,891.08x = 13,649.72 × 5,414.88
  4. Step 4: Simplify right side
    9,891.08x = 73,911,568.76
  5. Step 5: Solve for x
    x = 73,911,568.76/9,891.08
  6. Step 6: Final answer
    x = 7,472.55

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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.