Home / 8,279.31-11,426.49-5,135.97

Finding the Fourth Proportional to 8,279.31, 11,426.49 and 5,135.97

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Solution

The fourth proportional to 8,279.31, 11,426.49 and 5,135.97 is: 7,088.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.31 : 11,426.49 = 5,135.97 : x
  2. Step 2: Convert to fraction form
    8,279.31/11,426.49 = 5,135.97/x
  3. Step 3: Cross multiply
    8,279.31x = 11,426.49 × 5,135.97
  4. Step 4: Simplify right side
    8,279.31x = 58,686,109.85
  5. Step 5: Solve for x
    x = 58,686,109.85/8,279.31
  6. Step 6: Final answer
    x = 7,088.29

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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.