Home / 5,234.76-7,224.12-3,139.56

Finding the Fourth Proportional to 5,234.76, 7,224.12 and 3,139.56

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Solution

The fourth proportional to 5,234.76, 7,224.12 and 3,139.56 is: 4,332.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,234.76 : 7,224.12 = 3,139.56 : x
  2. Step 2: Convert to fraction form
    5,234.76/7,224.12 = 3,139.56/x
  3. Step 3: Cross multiply
    5,234.76x = 7,224.12 × 3,139.56
  4. Step 4: Simplify right side
    5,234.76x = 22,680,558.19
  5. Step 5: Solve for x
    x = 22,680,558.19/5,234.76
  6. Step 6: Final answer
    x = 4,332.68

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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.