Home / 2,115.55-3,179.40-2,079.10

Finding the Fourth Proportional to 2,115.55, 3,179.40 and 2,079.10

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Solution

The fourth proportional to 2,115.55, 3,179.40 and 2,079.10 is: 3,124.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.55 : 3,179.40 = 2,079.10 : x
  2. Step 2: Convert to fraction form
    2,115.55/3,179.40 = 2,079.10/x
  3. Step 3: Cross multiply
    2,115.55x = 3,179.40 × 2,079.10
  4. Step 4: Simplify right side
    2,115.55x = 6,610,290.54
  5. Step 5: Solve for x
    x = 6,610,290.54/2,115.55
  6. Step 6: Final answer
    x = 3,124.62

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1.5x scale

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.