Home / 2,278.20-3,398.24-2,089.48

Finding the Fourth Proportional to 2,278.20, 3,398.24 and 2,089.48

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Solution

The fourth proportional to 2,278.20, 3,398.24 and 2,089.48 is: 3,116.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.20 : 3,398.24 = 2,089.48 : x
  2. Step 2: Convert to fraction form
    2,278.20/3,398.24 = 2,089.48/x
  3. Step 3: Cross multiply
    2,278.20x = 3,398.24 × 2,089.48
  4. Step 4: Simplify right side
    2,278.20x = 7,100,554.52
  5. Step 5: Solve for x
    x = 7,100,554.52/2,278.20
  6. Step 6: Final answer
    x = 3,116.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.