Home / 7,990.38-11,026.71-4,453.56

Finding the Fourth Proportional to 7,990.38, 11,026.71 and 4,453.56

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Solution

The fourth proportional to 7,990.38, 11,026.71 and 4,453.56 is: 6,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.38 : 11,026.71 = 4,453.56 : x
  2. Step 2: Convert to fraction form
    7,990.38/11,026.71 = 4,453.56/x
  3. Step 3: Cross multiply
    7,990.38x = 11,026.71 × 4,453.56
  4. Step 4: Simplify right side
    7,990.38x = 49,108,114.59
  5. Step 5: Solve for x
    x = 49,108,114.59/7,990.38
  6. Step 6: Final answer
    x = 6,145.90

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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.