Home / 2,260.15-3,390.11-721.03

Finding the Fourth Proportional to 2,260.15, 3,390.11 and 721.03

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Solution

The fourth proportional to 2,260.15, 3,390.11 and 721.03 is: 1,081.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,260.15 : 3,390.11 = 721.03 : x
  2. Step 2: Convert to fraction form
    2,260.15/3,390.11 = 721.03/x
  3. Step 3: Cross multiply
    2,260.15x = 3,390.11 × 721.03
  4. Step 4: Simplify right side
    2,260.15x = 2,444,367.41
  5. Step 5: Solve for x
    x = 2,444,367.41/2,260.15
  6. Step 6: Final answer
    x = 1,081.51

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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.