Home / 8,428.07-12,642.17-5,524.76

Finding the Fourth Proportional to 8,428.07, 12,642.17 and 5,524.76

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Solution

The fourth proportional to 8,428.07, 12,642.17 and 5,524.76 is: 8,287.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.07 : 12,642.17 = 5,524.76 : x
  2. Step 2: Convert to fraction form
    8,428.07/12,642.17 = 5,524.76/x
  3. Step 3: Cross multiply
    8,428.07x = 12,642.17 × 5,524.76
  4. Step 4: Simplify right side
    8,428.07x = 69,844,955.13
  5. Step 5: Solve for x
    x = 69,844,955.13/8,428.07
  6. Step 6: Final answer
    x = 8,287.18

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Half scale
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Similar ratio
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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.