Home / 3,660.81-5,491.48-1,322.20

Finding the Fourth Proportional to 3,660.81, 5,491.48 and 1,322.20

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Solution

The fourth proportional to 3,660.81, 5,491.48 and 1,322.20 is: 1,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.81 : 5,491.48 = 1,322.20 : x
  2. Step 2: Convert to fraction form
    3,660.81/5,491.48 = 1,322.20/x
  3. Step 3: Cross multiply
    3,660.81x = 5,491.48 × 1,322.20
  4. Step 4: Simplify right side
    3,660.81x = 7,260,834.86
  5. Step 5: Solve for x
    x = 7,260,834.86/3,660.81
  6. Step 6: Final answer
    x = 1,983.40

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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.