Home / 3,660.48-5,491.44-1,320.66

Finding the Fourth Proportional to 3,660.48, 5,491.44 and 1,320.66

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Solution

The fourth proportional to 3,660.48, 5,491.44 and 1,320.66 is: 1,981.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.48 : 5,491.44 = 1,320.66 : x
  2. Step 2: Convert to fraction form
    3,660.48/5,491.44 = 1,320.66/x
  3. Step 3: Cross multiply
    3,660.48x = 5,491.44 × 1,320.66
  4. Step 4: Simplify right side
    3,660.48x = 7,252,325.15
  5. Step 5: Solve for x
    x = 7,252,325.15/3,660.48
  6. Step 6: Final answer
    x = 1,981.25

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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.