Home / 8,109.74-11,193.18-5,123.68

Finding the Fourth Proportional to 8,109.74, 11,193.18 and 5,123.68

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Solution

The fourth proportional to 8,109.74, 11,193.18 and 5,123.68 is: 7,071.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.74 : 11,193.18 = 5,123.68 : x
  2. Step 2: Convert to fraction form
    8,109.74/11,193.18 = 5,123.68/x
  3. Step 3: Cross multiply
    8,109.74x = 11,193.18 × 5,123.68
  4. Step 4: Simplify right side
    8,109.74x = 57,350,272.50
  5. Step 5: Solve for x
    x = 57,350,272.50/8,109.74
  6. Step 6: Final answer
    x = 7,071.78

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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.