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Finding the Fourth Proportional to 1,959.74, 2,703.96 and 1,120.19

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Solution

The fourth proportional to 1,959.74, 2,703.96 and 1,120.19 is: 1,545.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.74 : 2,703.96 = 1,120.19 : x
  2. Step 2: Convert to fraction form
    1,959.74/2,703.96 = 1,120.19/x
  3. Step 3: Cross multiply
    1,959.74x = 2,703.96 × 1,120.19
  4. Step 4: Simplify right side
    1,959.74x = 3,028,948.95
  5. Step 5: Solve for x
    x = 3,028,948.95/1,959.74
  6. Step 6: Final answer
    x = 1,545.59

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1.5x scale

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.