Home / 9,115.38-12,579.03-5,338.08

Finding the Fourth Proportional to 9,115.38, 12,579.03 and 5,338.08

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Solution

The fourth proportional to 9,115.38, 12,579.03 and 5,338.08 is: 7,366.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.38 : 12,579.03 = 5,338.08 : x
  2. Step 2: Convert to fraction form
    9,115.38/12,579.03 = 5,338.08/x
  3. Step 3: Cross multiply
    9,115.38x = 12,579.03 × 5,338.08
  4. Step 4: Simplify right side
    9,115.38x = 67,147,868.46
  5. Step 5: Solve for x
    x = 67,147,868.46/9,115.38
  6. Step 6: Final answer
    x = 7,366.44

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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.