Home / 2,219.20-3,062.46-1,224.56

Finding the Fourth Proportional to 2,219.20, 3,062.46 and 1,224.56

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Solution

The fourth proportional to 2,219.20, 3,062.46 and 1,224.56 is: 1,689.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.20 : 3,062.46 = 1,224.56 : x
  2. Step 2: Convert to fraction form
    2,219.20/3,062.46 = 1,224.56/x
  3. Step 3: Cross multiply
    2,219.20x = 3,062.46 × 1,224.56
  4. Step 4: Simplify right side
    2,219.20x = 3,750,166.02
  5. Step 5: Solve for x
    x = 3,750,166.02/2,219.20
  6. Step 6: Final answer
    x = 1,689.87

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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.