Home / 2,278.56-3,418.02-1,123.68

Finding the Fourth Proportional to 2,278.56, 3,418.02 and 1,123.68

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Solution

The fourth proportional to 2,278.56, 3,418.02 and 1,123.68 is: 1,685.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.56 : 3,418.02 = 1,123.68 : x
  2. Step 2: Convert to fraction form
    2,278.56/3,418.02 = 1,123.68/x
  3. Step 3: Cross multiply
    2,278.56x = 3,418.02 × 1,123.68
  4. Step 4: Simplify right side
    2,278.56x = 3,840,760.71
  5. Step 5: Solve for x
    x = 3,840,760.71/2,278.56
  6. Step 6: Final answer
    x = 1,685.61

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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.