Home / 2,081.28-2,872.44-1,451.40

Finding the Fourth Proportional to 2,081.28, 2,872.44 and 1,451.40

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Solution

The fourth proportional to 2,081.28, 2,872.44 and 1,451.40 is: 2,003.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.28 : 2,872.44 = 1,451.40 : x
  2. Step 2: Convert to fraction form
    2,081.28/2,872.44 = 1,451.40/x
  3. Step 3: Cross multiply
    2,081.28x = 2,872.44 × 1,451.40
  4. Step 4: Simplify right side
    2,081.28x = 4,169,059.42
  5. Step 5: Solve for x
    x = 4,169,059.42/2,081.28
  6. Step 6: Final answer
    x = 2,003.12

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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.