Home / 2,712.60-4,071.20-2,131.16

Finding the Fourth Proportional to 2,712.60, 4,071.20 and 2,131.16

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Solution

The fourth proportional to 2,712.60, 4,071.20 and 2,131.16 is: 3,198.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.60 : 4,071.20 = 2,131.16 : x
  2. Step 2: Convert to fraction form
    2,712.60/4,071.20 = 2,131.16/x
  3. Step 3: Cross multiply
    2,712.60x = 4,071.20 × 2,131.16
  4. Step 4: Simplify right side
    2,712.60x = 8,676,347.58
  5. Step 5: Solve for x
    x = 8,676,347.58/2,712.60
  6. Step 6: Final answer
    x = 3,198.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.