Home / 1,917.34-2,645.28-1,120.48

Finding the Fourth Proportional to 1,917.34, 2,645.28 and 1,120.48

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Solution

The fourth proportional to 1,917.34, 2,645.28 and 1,120.48 is: 1,545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.34 : 2,645.28 = 1,120.48 : x
  2. Step 2: Convert to fraction form
    1,917.34/2,645.28 = 1,120.48/x
  3. Step 3: Cross multiply
    1,917.34x = 2,645.28 × 1,120.48
  4. Step 4: Simplify right side
    1,917.34x = 2,963,976.72
  5. Step 5: Solve for x
    x = 2,963,976.72/1,917.34
  6. Step 6: Final answer
    x = 1,545.88

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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.