Home / 5,145.10-7,717.58-1,249.54

Finding the Fourth Proportional to 5,145.10, 7,717.58 and 1,249.54

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Solution

The fourth proportional to 5,145.10, 7,717.58 and 1,249.54 is: 1,874.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.10 : 7,717.58 = 1,249.54 : x
  2. Step 2: Convert to fraction form
    5,145.10/7,717.58 = 1,249.54/x
  3. Step 3: Cross multiply
    5,145.10x = 7,717.58 × 1,249.54
  4. Step 4: Simplify right side
    5,145.10x = 9,643,424.91
  5. Step 5: Solve for x
    x = 9,643,424.91/5,145.10
  6. Step 6: Final answer
    x = 1,874.29

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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.