Home / 1,948.73-2,920.75-1,125.29

Finding the Fourth Proportional to 1,948.73, 2,920.75 and 1,125.29

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Solution

The fourth proportional to 1,948.73, 2,920.75 and 1,125.29 is: 1,686.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.73 : 2,920.75 = 1,125.29 : x
  2. Step 2: Convert to fraction form
    1,948.73/2,920.75 = 1,125.29/x
  3. Step 3: Cross multiply
    1,948.73x = 2,920.75 × 1,125.29
  4. Step 4: Simplify right side
    1,948.73x = 3,286,695.26
  5. Step 5: Solve for x
    x = 3,286,695.26/1,948.73
  6. Step 6: Final answer
    x = 1,686.59

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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.