Home / 2,219.18-3,062.42-1,224.40

Finding the Fourth Proportional to 2,219.18, 3,062.42 and 1,224.40

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Solution

The fourth proportional to 2,219.18, 3,062.42 and 1,224.40 is: 1,689.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.18 : 3,062.42 = 1,224.40 : x
  2. Step 2: Convert to fraction form
    2,219.18/3,062.42 = 1,224.40/x
  3. Step 3: Cross multiply
    2,219.18x = 3,062.42 × 1,224.40
  4. Step 4: Simplify right side
    2,219.18x = 3,749,630.49
  5. Step 5: Solve for x
    x = 3,749,630.49/2,219.18
  6. Step 6: Final answer
    x = 1,689.65

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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.