Home / 2,871.45-3,962.79-1,612.60

Finding the Fourth Proportional to 2,871.45, 3,962.79 and 1,612.60

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Solution

The fourth proportional to 2,871.45, 3,962.79 and 1,612.60 is: 2,225.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.45 : 3,962.79 = 1,612.60 : x
  2. Step 2: Convert to fraction form
    2,871.45/3,962.79 = 1,612.60/x
  3. Step 3: Cross multiply
    2,871.45x = 3,962.79 × 1,612.60
  4. Step 4: Simplify right side
    2,871.45x = 6,390,385.25
  5. Step 5: Solve for x
    x = 6,390,385.25/2,871.45
  6. Step 6: Final answer
    x = 2,225.49

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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.