Home / 3,280.59-4,920.98-1,089.50

Finding the Fourth Proportional to 3,280.59, 4,920.98 and 1,089.50

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Solution

The fourth proportional to 3,280.59, 4,920.98 and 1,089.50 is: 1,634.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.59 : 4,920.98 = 1,089.50 : x
  2. Step 2: Convert to fraction form
    3,280.59/4,920.98 = 1,089.50/x
  3. Step 3: Cross multiply
    3,280.59x = 4,920.98 × 1,089.50
  4. Step 4: Simplify right side
    3,280.59x = 5,361,377.66
  5. Step 5: Solve for x
    x = 5,361,377.66/3,280.59
  6. Step 6: Final answer
    x = 1,634.27

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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.