Home / 5,145.38-7,718.09-1,249.79

Finding the Fourth Proportional to 5,145.38, 7,718.09 and 1,249.79

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Solution

The fourth proportional to 5,145.38, 7,718.09 and 1,249.79 is: 1,874.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.38 : 7,718.09 = 1,249.79 : x
  2. Step 2: Convert to fraction form
    5,145.38/7,718.09 = 1,249.79/x
  3. Step 3: Cross multiply
    5,145.38x = 7,718.09 × 1,249.79
  4. Step 4: Simplify right side
    5,145.38x = 9,645,953.11
  5. Step 5: Solve for x
    x = 9,645,953.11/5,145.38
  6. Step 6: Final answer
    x = 1,874.68

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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.