Home / 2,871.83-3,963.08-1,612.90

Finding the Fourth Proportional to 2,871.83, 3,963.08 and 1,612.90

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Solution

The fourth proportional to 2,871.83, 3,963.08 and 1,612.90 is: 2,225.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.83 : 3,963.08 = 1,612.90 : x
  2. Step 2: Convert to fraction form
    2,871.83/3,963.08 = 1,612.90/x
  3. Step 3: Cross multiply
    2,871.83x = 3,963.08 × 1,612.90
  4. Step 4: Simplify right side
    2,871.83x = 6,392,023.85
  5. Step 5: Solve for x
    x = 6,392,023.85/2,871.83
  6. Step 6: Final answer
    x = 2,225.77

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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.