Home / 2,871.32-3,961.95-1,612.20

Finding the Fourth Proportional to 2,871.32, 3,961.95 and 1,612.20

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Solution

The fourth proportional to 2,871.32, 3,961.95 and 1,612.20 is: 2,224.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.32 : 3,961.95 = 1,612.20 : x
  2. Step 2: Convert to fraction form
    2,871.32/3,961.95 = 1,612.20/x
  3. Step 3: Cross multiply
    2,871.32x = 3,961.95 × 1,612.20
  4. Step 4: Simplify right side
    2,871.32x = 6,387,464.60
  5. Step 5: Solve for x
    x = 6,387,464.60/2,871.32
  6. Step 6: Final answer
    x = 2,224.58

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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.