Home / 3,153.83-4,350.20-1,972.85

Finding the Fourth Proportional to 3,153.83, 4,350.20 and 1,972.85

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Solution

The fourth proportional to 3,153.83, 4,350.20 and 1,972.85 is: 2,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.83 : 4,350.20 = 1,972.85 : x
  2. Step 2: Convert to fraction form
    3,153.83/4,350.20 = 1,972.85/x
  3. Step 3: Cross multiply
    3,153.83x = 4,350.20 × 1,972.85
  4. Step 4: Simplify right side
    3,153.83x = 8,582,260.45
  5. Step 5: Solve for x
    x = 8,582,260.45/3,153.83
  6. Step 6: Final answer
    x = 2,721.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.