Home / 4,399.20-6,598.68-1,321.20

Finding the Fourth Proportional to 4,399.20, 6,598.68 and 1,321.20

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Solution

The fourth proportional to 4,399.20, 6,598.68 and 1,321.20 is: 1,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,399.20 : 6,598.68 = 1,321.20 : x
  2. Step 2: Convert to fraction form
    4,399.20/6,598.68 = 1,321.20/x
  3. Step 3: Cross multiply
    4,399.20x = 6,598.68 × 1,321.20
  4. Step 4: Simplify right side
    4,399.20x = 8,718,176.02
  5. Step 5: Solve for x
    x = 8,718,176.02/4,399.20
  6. Step 6: Final answer
    x = 1,981.76

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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.