Home / 2,220.55-3,330.91-739.90

Finding the Fourth Proportional to 2,220.55, 3,330.91 and 739.90

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Solution

The fourth proportional to 2,220.55, 3,330.91 and 739.90 is: 1,109.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.55 : 3,330.91 = 739.90 : x
  2. Step 2: Convert to fraction form
    2,220.55/3,330.91 = 739.90/x
  3. Step 3: Cross multiply
    2,220.55x = 3,330.91 × 739.90
  4. Step 4: Simplify right side
    2,220.55x = 2,464,541.24
  5. Step 5: Solve for x
    x = 2,464,541.24/2,220.55
  6. Step 6: Final answer
    x = 1,109.88

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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.