Home / 8,147.49-11,249.23-5,123.96

Finding the Fourth Proportional to 8,147.49, 11,249.23 and 5,123.96

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Solution

The fourth proportional to 8,147.49, 11,249.23 and 5,123.96 is: 7,074.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.49 : 11,249.23 = 5,123.96 : x
  2. Step 2: Convert to fraction form
    8,147.49/11,249.23 = 5,123.96/x
  3. Step 3: Cross multiply
    8,147.49x = 11,249.23 × 5,123.96
  4. Step 4: Simplify right side
    8,147.49x = 57,640,587.29
  5. Step 5: Solve for x
    x = 57,640,587.29/8,147.49
  6. Step 6: Final answer
    x = 7,074.65

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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.