Home / 3,280.40-4,920.53-1,089.14

Finding the Fourth Proportional to 3,280.40, 4,920.53 and 1,089.14

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Solution

The fourth proportional to 3,280.40, 4,920.53 and 1,089.14 is: 1,633.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.40 : 4,920.53 = 1,089.14 : x
  2. Step 2: Convert to fraction form
    3,280.40/4,920.53 = 1,089.14/x
  3. Step 3: Cross multiply
    3,280.40x = 4,920.53 × 1,089.14
  4. Step 4: Simplify right side
    3,280.40x = 5,359,152.90
  5. Step 5: Solve for x
    x = 5,359,152.90/3,280.40
  6. Step 6: Final answer
    x = 1,633.69

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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.