Home / 7,335.92-10,123.60-3,978.76

Finding the Fourth Proportional to 7,335.92, 10,123.60 and 3,978.76

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Solution

The fourth proportional to 7,335.92, 10,123.60 and 3,978.76 is: 5,490.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,335.92 : 10,123.60 = 3,978.76 : x
  2. Step 2: Convert to fraction form
    7,335.92/10,123.60 = 3,978.76/x
  3. Step 3: Cross multiply
    7,335.92x = 10,123.60 × 3,978.76
  4. Step 4: Simplify right side
    7,335.92x = 40,279,374.74
  5. Step 5: Solve for x
    x = 40,279,374.74/7,335.92
  6. Step 6: Final answer
    x = 5,490.71

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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.