Home / 3,125.75-4,295.50-2,981.20

Finding the Fourth Proportional to 3,125.75, 4,295.50 and 2,981.20

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Solution

The fourth proportional to 3,125.75, 4,295.50 and 2,981.20 is: 4,096.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.75 : 4,295.50 = 2,981.20 : x
  2. Step 2: Convert to fraction form
    3,125.75/4,295.50 = 2,981.20/x
  3. Step 3: Cross multiply
    3,125.75x = 4,295.50 × 2,981.20
  4. Step 4: Simplify right side
    3,125.75x = 12,805,744.60
  5. Step 5: Solve for x
    x = 12,805,744.60/3,125.75
  6. Step 6: Final answer
    x = 4,096.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.