Home / 2,081.43-2,872.77-1,242.64

Finding the Fourth Proportional to 2,081.43, 2,872.77 and 1,242.64

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Solution

The fourth proportional to 2,081.43, 2,872.77 and 1,242.64 is: 1,715.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.43 : 2,872.77 = 1,242.64 : x
  2. Step 2: Convert to fraction form
    2,081.43/2,872.77 = 1,242.64/x
  3. Step 3: Cross multiply
    2,081.43x = 2,872.77 × 1,242.64
  4. Step 4: Simplify right side
    2,081.43x = 3,569,817.84
  5. Step 5: Solve for x
    x = 3,569,817.84/2,081.43
  6. Step 6: Final answer
    x = 1,715.08

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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.