Home / 5,126.56-7,071.92-3,138.08

Finding the Fourth Proportional to 5,126.56, 7,071.92 and 3,138.08

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Solution

The fourth proportional to 5,126.56, 7,071.92 and 3,138.08 is: 4,328.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.56 : 7,071.92 = 3,138.08 : x
  2. Step 2: Convert to fraction form
    5,126.56/7,071.92 = 3,138.08/x
  3. Step 3: Cross multiply
    5,126.56x = 7,071.92 × 3,138.08
  4. Step 4: Simplify right side
    5,126.56x = 22,192,250.71
  5. Step 5: Solve for x
    x = 22,192,250.71/5,126.56
  6. Step 6: Final answer
    x = 4,328.88

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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.