Home / 2,947.73-4,066.78-1,687.88

Finding the Fourth Proportional to 2,947.73, 4,066.78 and 1,687.88

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Solution

The fourth proportional to 2,947.73, 4,066.78 and 1,687.88 is: 2,328.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.73 : 4,066.78 = 1,687.88 : x
  2. Step 2: Convert to fraction form
    2,947.73/4,066.78 = 1,687.88/x
  3. Step 3: Cross multiply
    2,947.73x = 4,066.78 × 1,687.88
  4. Step 4: Simplify right side
    2,947.73x = 6,864,242.57
  5. Step 5: Solve for x
    x = 6,864,242.57/2,947.73
  6. Step 6: Final answer
    x = 2,328.65

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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.