Home / 2,881.90-3,975.78-2,217.70

Finding the Fourth Proportional to 2,881.90, 3,975.78 and 2,217.70

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Solution

The fourth proportional to 2,881.90, 3,975.78 and 2,217.70 is: 3,059.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.90 : 3,975.78 = 2,217.70 : x
  2. Step 2: Convert to fraction form
    2,881.90/3,975.78 = 2,217.70/x
  3. Step 3: Cross multiply
    2,881.90x = 3,975.78 × 2,217.70
  4. Step 4: Simplify right side
    2,881.90x = 8,817,087.31
  5. Step 5: Solve for x
    x = 8,817,087.31/2,881.90
  6. Step 6: Final answer
    x = 3,059.47

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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.