Home / 3,151.90-4,720.55-2,800.18

Finding the Fourth Proportional to 3,151.90, 4,720.55 and 2,800.18

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Solution

The fourth proportional to 3,151.90, 4,720.55 and 2,800.18 is: 4,193.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.90 : 4,720.55 = 2,800.18 : x
  2. Step 2: Convert to fraction form
    3,151.90/4,720.55 = 2,800.18/x
  3. Step 3: Cross multiply
    3,151.90x = 4,720.55 × 2,800.18
  4. Step 4: Simplify right side
    3,151.90x = 13,218,389.70
  5. Step 5: Solve for x
    x = 13,218,389.70/3,151.90
  6. Step 6: Final answer
    x = 4,193.78

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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.