Home / 3,280.46-4,921.52-1,089.20

Finding the Fourth Proportional to 3,280.46, 4,921.52 and 1,089.20

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Solution

The fourth proportional to 3,280.46, 4,921.52 and 1,089.20 is: 1,634.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.46 : 4,921.52 = 1,089.20 : x
  2. Step 2: Convert to fraction form
    3,280.46/4,921.52 = 1,089.20/x
  3. Step 3: Cross multiply
    3,280.46x = 4,921.52 × 1,089.20
  4. Step 4: Simplify right side
    3,280.46x = 5,360,489.53
  5. Step 5: Solve for x
    x = 5,360,489.53/3,280.46
  6. Step 6: Final answer
    x = 1,634.07

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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.