Home / 5,145.24-7,717.79-1,249.64

Finding the Fourth Proportional to 5,145.24, 7,717.79 and 1,249.64

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Solution

The fourth proportional to 5,145.24, 7,717.79 and 1,249.64 is: 1,874.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.24 : 7,717.79 = 1,249.64 : x
  2. Step 2: Convert to fraction form
    5,145.24/7,717.79 = 1,249.64/x
  3. Step 3: Cross multiply
    5,145.24x = 7,717.79 × 1,249.64
  4. Step 4: Simplify right side
    5,145.24x = 9,644,481.51
  5. Step 5: Solve for x
    x = 9,644,481.51/5,145.24
  6. Step 6: Final answer
    x = 1,874.45

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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.