Home / 2,872.59-3,963.69-1,677.66

Finding the Fourth Proportional to 2,872.59, 3,963.69 and 1,677.66

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Solution

The fourth proportional to 2,872.59, 3,963.69 and 1,677.66 is: 2,314.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.59 : 3,963.69 = 1,677.66 : x
  2. Step 2: Convert to fraction form
    2,872.59/3,963.69 = 1,677.66/x
  3. Step 3: Cross multiply
    2,872.59x = 3,963.69 × 1,677.66
  4. Step 4: Simplify right side
    2,872.59x = 6,649,724.17
  5. Step 5: Solve for x
    x = 6,649,724.17/2,872.59
  6. Step 6: Final answer
    x = 2,314.89

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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.