Home / 1,545.87-2,132.61-1,215.26

Finding the Fourth Proportional to 1,545.87, 2,132.61 and 1,215.26

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Solution

The fourth proportional to 1,545.87, 2,132.61 and 1,215.26 is: 1,676.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.87 : 2,132.61 = 1,215.26 : x
  2. Step 2: Convert to fraction form
    1,545.87/2,132.61 = 1,215.26/x
  3. Step 3: Cross multiply
    1,545.87x = 2,132.61 × 1,215.26
  4. Step 4: Simplify right side
    1,545.87x = 2,591,664.97
  5. Step 5: Solve for x
    x = 2,591,664.97/1,545.87
  6. Step 6: Final answer
    x = 1,676.51

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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.