Home / 4,255.22-5,870.57-3,138.83

Finding the Fourth Proportional to 4,255.22, 5,870.57 and 3,138.83

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Solution

The fourth proportional to 4,255.22, 5,870.57 and 3,138.83 is: 4,330.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,255.22 : 5,870.57 = 3,138.83 : x
  2. Step 2: Convert to fraction form
    4,255.22/5,870.57 = 3,138.83/x
  3. Step 3: Cross multiply
    4,255.22x = 5,870.57 × 3,138.83
  4. Step 4: Simplify right side
    4,255.22x = 18,426,691.88
  5. Step 5: Solve for x
    x = 18,426,691.88/4,255.22
  6. Step 6: Final answer
    x = 4,330.38

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Half scale
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Double 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.