Home / 8,128.41-11,217.20-4,402.41

Finding the Fourth Proportional to 8,128.41, 11,217.20 and 4,402.41

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Solution

The fourth proportional to 8,128.41, 11,217.20 and 4,402.41 is: 6,075.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.41 : 11,217.20 = 4,402.41 : x
  2. Step 2: Convert to fraction form
    8,128.41/11,217.20 = 4,402.41/x
  3. Step 3: Cross multiply
    8,128.41x = 11,217.20 × 4,402.41
  4. Step 4: Simplify right side
    8,128.41x = 49,382,691.44
  5. Step 5: Solve for x
    x = 49,382,691.44/8,128.41
  6. Step 6: Final answer
    x = 6,075.32

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Half scale
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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.