Home / 5,151.74-7,719.17-2,187.81

Finding the Fourth Proportional to 5,151.74, 7,719.17 and 2,187.81

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Solution

The fourth proportional to 5,151.74, 7,719.17 and 2,187.81 is: 3,278.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.74 : 7,719.17 = 2,187.81 : x
  2. Step 2: Convert to fraction form
    5,151.74/7,719.17 = 2,187.81/x
  3. Step 3: Cross multiply
    5,151.74x = 7,719.17 × 2,187.81
  4. Step 4: Simplify right side
    5,151.74x = 16,888,066.38
  5. Step 5: Solve for x
    x = 16,888,066.38/5,151.74
  6. Step 6: Final answer
    x = 3,278.13

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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.