Home / 8,418.28-11,612.82-6,425.38

Finding the Fourth Proportional to 8,418.28, 11,612.82 and 6,425.38

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Solution

The fourth proportional to 8,418.28, 11,612.82 and 6,425.38 is: 8,863.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.28 : 11,612.82 = 6,425.38 : x
  2. Step 2: Convert to fraction form
    8,418.28/11,612.82 = 6,425.38/x
  3. Step 3: Cross multiply
    8,418.28x = 11,612.82 × 6,425.38
  4. Step 4: Simplify right side
    8,418.28x = 74,616,718.52
  5. Step 5: Solve for x
    x = 74,616,718.52/8,418.28
  6. Step 6: Final answer
    x = 8,863.65

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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.