Home / 2,145.13-3,218.55-1,049.20

Finding the Fourth Proportional to 2,145.13, 3,218.55 and 1,049.20

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Solution

The fourth proportional to 2,145.13, 3,218.55 and 1,049.20 is: 1,574.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.13 : 3,218.55 = 1,049.20 : x
  2. Step 2: Convert to fraction form
    2,145.13/3,218.55 = 1,049.20/x
  3. Step 3: Cross multiply
    2,145.13x = 3,218.55 × 1,049.20
  4. Step 4: Simplify right side
    2,145.13x = 3,376,902.66
  5. Step 5: Solve for x
    x = 3,376,902.66/2,145.13
  6. Step 6: Final answer
    x = 1,574.22

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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.