Home / 1,481.87-2,220.68-1,088.78

Finding the Fourth Proportional to 1,481.87, 2,220.68 and 1,088.78

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Solution

The fourth proportional to 1,481.87, 2,220.68 and 1,088.78 is: 1,631.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.87 : 2,220.68 = 1,088.78 : x
  2. Step 2: Convert to fraction form
    1,481.87/2,220.68 = 1,088.78/x
  3. Step 3: Cross multiply
    1,481.87x = 2,220.68 × 1,088.78
  4. Step 4: Simplify right side
    1,481.87x = 2,417,831.97
  5. Step 5: Solve for x
    x = 2,417,831.97/1,481.87
  6. Step 6: Final answer
    x = 1,631.61

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1.5x scale

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.