Home / 2,220.38-3,330.18-660.36

Finding the Fourth Proportional to 2,220.38, 3,330.18 and 660.36

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Solution

The fourth proportional to 2,220.38, 3,330.18 and 660.36 is: 990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.38 : 3,330.18 = 660.36 : x
  2. Step 2: Convert to fraction form
    2,220.38/3,330.18 = 660.36/x
  3. Step 3: Cross multiply
    2,220.38x = 3,330.18 × 660.36
  4. Step 4: Simplify right side
    2,220.38x = 2,199,117.66
  5. Step 5: Solve for x
    x = 2,199,117.66/2,220.38
  6. Step 6: Final answer
    x = 990.43

Related Problems

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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.