Home / 1,790.31-2,470.20-1,126.92

Finding the Fourth Proportional to 1,790.31, 2,470.20 and 1,126.92

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Solution

The fourth proportional to 1,790.31, 2,470.20 and 1,126.92 is: 1,554.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.31 : 2,470.20 = 1,126.92 : x
  2. Step 2: Convert to fraction form
    1,790.31/2,470.20 = 1,126.92/x
  3. Step 3: Cross multiply
    1,790.31x = 2,470.20 × 1,126.92
  4. Step 4: Simplify right side
    1,790.31x = 2,783,717.78
  5. Step 5: Solve for x
    x = 2,783,717.78/1,790.31
  6. Step 6: Final answer
    x = 1,554.88

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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.