Home / 2,116.13-3,174.19-818.51

Finding the Fourth Proportional to 2,116.13, 3,174.19 and 818.51

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Solution

The fourth proportional to 2,116.13, 3,174.19 and 818.51 is: 1,227.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.13 : 3,174.19 = 818.51 : x
  2. Step 2: Convert to fraction form
    2,116.13/3,174.19 = 818.51/x
  3. Step 3: Cross multiply
    2,116.13x = 3,174.19 × 818.51
  4. Step 4: Simplify right side
    2,116.13x = 2,598,088.34
  5. Step 5: Solve for x
    x = 2,598,088.34/2,116.13
  6. Step 6: Final answer
    x = 1,227.76

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.