Home / 1,705.29-2,557.31-1,340.79

Finding the Fourth Proportional to 1,705.29, 2,557.31 and 1,340.79

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Solution

The fourth proportional to 1,705.29, 2,557.31 and 1,340.79 is: 2,010.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.29 : 2,557.31 = 1,340.79 : x
  2. Step 2: Convert to fraction form
    1,705.29/2,557.31 = 1,340.79/x
  3. Step 3: Cross multiply
    1,705.29x = 2,557.31 × 1,340.79
  4. Step 4: Simplify right side
    1,705.29x = 3,428,808.97
  5. Step 5: Solve for x
    x = 3,428,808.97/1,705.29
  6. Step 6: Final answer
    x = 2,010.69

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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.