Home / 9,175.43-12,643.92-6,515.39

Finding the Fourth Proportional to 9,175.43, 12,643.92 and 6,515.39

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Solution

The fourth proportional to 9,175.43, 12,643.92 and 6,515.39 is: 8,978.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,175.43 : 12,643.92 = 6,515.39 : x
  2. Step 2: Convert to fraction form
    9,175.43/12,643.92 = 6,515.39/x
  3. Step 3: Cross multiply
    9,175.43x = 12,643.92 × 6,515.39
  4. Step 4: Simplify right side
    9,175.43x = 82,380,006.71
  5. Step 5: Solve for x
    x = 82,380,006.71/9,175.43
  6. Step 6: Final answer
    x = 8,978.33

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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.