Home / 7,385.38-11,081.31-3,488.74

Finding the Fourth Proportional to 7,385.38, 11,081.31 and 3,488.74

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Solution

The fourth proportional to 7,385.38, 11,081.31 and 3,488.74 is: 5,234.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,385.38 : 11,081.31 = 3,488.74 : x
  2. Step 2: Convert to fraction form
    7,385.38/11,081.31 = 3,488.74/x
  3. Step 3: Cross multiply
    7,385.38x = 11,081.31 × 3,488.74
  4. Step 4: Simplify right side
    7,385.38x = 38,659,809.45
  5. Step 5: Solve for x
    x = 38,659,809.45/7,385.38
  6. Step 6: Final answer
    x = 5,234.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.