Home / 1,712.88-2,569.40-1,129.04

Finding the Fourth Proportional to 1,712.88, 2,569.40 and 1,129.04

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Solution

The fourth proportional to 1,712.88, 2,569.40 and 1,129.04 is: 1,693.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.88 : 2,569.40 = 1,129.04 : x
  2. Step 2: Convert to fraction form
    1,712.88/2,569.40 = 1,129.04/x
  3. Step 3: Cross multiply
    1,712.88x = 2,569.40 × 1,129.04
  4. Step 4: Simplify right side
    1,712.88x = 2,900,955.38
  5. Step 5: Solve for x
    x = 2,900,955.38/1,712.88
  6. Step 6: Final answer
    x = 1,693.61

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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.