Home / 3,280.70-4,925.55-2,117.90

Finding the Fourth Proportional to 3,280.70, 4,925.55 and 2,117.90

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Solution

The fourth proportional to 3,280.70, 4,925.55 and 2,117.90 is: 3,179.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.70 : 4,925.55 = 2,117.90 : x
  2. Step 2: Convert to fraction form
    3,280.70/4,925.55 = 2,117.90/x
  3. Step 3: Cross multiply
    3,280.70x = 4,925.55 × 2,117.90
  4. Step 4: Simplify right side
    3,280.70x = 10,431,822.35
  5. Step 5: Solve for x
    x = 10,431,822.35/3,280.70
  6. Step 6: Final answer
    x = 3,179.76

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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.