Home / 2,220.64-3,331.12-682.72

Finding the Fourth Proportional to 2,220.64, 3,331.12 and 682.72

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Solution

The fourth proportional to 2,220.64, 3,331.12 and 682.72 is: 1,024.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.64 : 3,331.12 = 682.72 : x
  2. Step 2: Convert to fraction form
    2,220.64/3,331.12 = 682.72/x
  3. Step 3: Cross multiply
    2,220.64x = 3,331.12 × 682.72
  4. Step 4: Simplify right side
    2,220.64x = 2,274,222.25
  5. Step 5: Solve for x
    x = 2,274,222.25/2,220.64
  6. Step 6: Final answer
    x = 1,024.13

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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.