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Finding the Fourth Proportional to 2,871.07, 3,962.15 and 1,612.22

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Solution

The fourth proportional to 2,871.07, 3,962.15 and 1,612.22 is: 2,224.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.07 : 3,962.15 = 1,612.22 : x
  2. Step 2: Convert to fraction form
    2,871.07/3,962.15 = 1,612.22/x
  3. Step 3: Cross multiply
    2,871.07x = 3,962.15 × 1,612.22
  4. Step 4: Simplify right side
    2,871.07x = 6,387,849.41
  5. Step 5: Solve for x
    x = 6,387,849.41/2,871.07
  6. Step 6: Final answer
    x = 2,224.91

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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.