Home / 8,142.38-11,224.23-6,370.91

Finding the Fourth Proportional to 8,142.38, 11,224.23 and 6,370.91

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Solution

The fourth proportional to 8,142.38, 11,224.23 and 6,370.91 is: 8,782.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.38 : 11,224.23 = 6,370.91 : x
  2. Step 2: Convert to fraction form
    8,142.38/11,224.23 = 6,370.91/x
  3. Step 3: Cross multiply
    8,142.38x = 11,224.23 × 6,370.91
  4. Step 4: Simplify right side
    8,142.38x = 71,508,559.15
  5. Step 5: Solve for x
    x = 71,508,559.15/8,142.38
  6. Step 6: Final answer
    x = 8,782.27

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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.