Home / 2,872.18-3,959.95-2,340.47

Finding the Fourth Proportional to 2,872.18, 3,959.95 and 2,340.47

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Solution

The fourth proportional to 2,872.18, 3,959.95 and 2,340.47 is: 3,226.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.18 : 3,959.95 = 2,340.47 : x
  2. Step 2: Convert to fraction form
    2,872.18/3,959.95 = 2,340.47/x
  3. Step 3: Cross multiply
    2,872.18x = 3,959.95 × 2,340.47
  4. Step 4: Simplify right side
    2,872.18x = 9,268,144.77
  5. Step 5: Solve for x
    x = 9,268,144.77/2,872.18
  6. Step 6: Final answer
    x = 3,226.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.