Home / 3,660.24-5,491.76-1,320.48

Finding the Fourth Proportional to 3,660.24, 5,491.76 and 1,320.48

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Solution

The fourth proportional to 3,660.24, 5,491.76 and 1,320.48 is: 1,981.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.24 : 5,491.76 = 1,320.48 : x
  2. Step 2: Convert to fraction form
    3,660.24/5,491.76 = 1,320.48/x
  3. Step 3: Cross multiply
    3,660.24x = 5,491.76 × 1,320.48
  4. Step 4: Simplify right side
    3,660.24x = 7,251,759.24
  5. Step 5: Solve for x
    x = 7,251,759.24/3,660.24
  6. Step 6: Final answer
    x = 1,981.23

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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.