Home / 2,872.17-3,959.40-2,282.91

Finding the Fourth Proportional to 2,872.17, 3,959.40 and 2,282.91

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Solution

The fourth proportional to 2,872.17, 3,959.40 and 2,282.91 is: 3,147.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.17 : 3,959.40 = 2,282.91 : x
  2. Step 2: Convert to fraction form
    2,872.17/3,959.40 = 2,282.91/x
  3. Step 3: Cross multiply
    2,872.17x = 3,959.40 × 2,282.91
  4. Step 4: Simplify right side
    2,872.17x = 9,038,953.85
  5. Step 5: Solve for x
    x = 9,038,953.85/2,872.17
  6. Step 6: Final answer
    x = 3,147.08

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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.