Home / 3,479.10-5,218.68-1,139.07

Finding the Fourth Proportional to 3,479.10, 5,218.68 and 1,139.07

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Solution

The fourth proportional to 3,479.10, 5,218.68 and 1,139.07 is: 1,708.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.10 : 5,218.68 = 1,139.07 : x
  2. Step 2: Convert to fraction form
    3,479.10/5,218.68 = 1,139.07/x
  3. Step 3: Cross multiply
    3,479.10x = 5,218.68 × 1,139.07
  4. Step 4: Simplify right side
    3,479.10x = 5,944,441.83
  5. Step 5: Solve for x
    x = 5,944,441.83/3,479.10
  6. Step 6: Final answer
    x = 1,708.61

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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.