Home / 5,131.38-7,689.51-2,351.19

Finding the Fourth Proportional to 5,131.38, 7,689.51 and 2,351.19

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Solution

The fourth proportional to 5,131.38, 7,689.51 and 2,351.19 is: 3,523.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.38 : 7,689.51 = 2,351.19 : x
  2. Step 2: Convert to fraction form
    5,131.38/7,689.51 = 2,351.19/x
  3. Step 3: Cross multiply
    5,131.38x = 7,689.51 × 2,351.19
  4. Step 4: Simplify right side
    5,131.38x = 18,079,499.02
  5. Step 5: Solve for x
    x = 18,079,499.02/5,131.38
  6. Step 6: Final answer
    x = 3,523.32

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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.