Home / 2,220.80-3,336.04-1,343.72

Finding the Fourth Proportional to 2,220.80, 3,336.04 and 1,343.72

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Solution

The fourth proportional to 2,220.80, 3,336.04 and 1,343.72 is: 2,018.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.80 : 3,336.04 = 1,343.72 : x
  2. Step 2: Convert to fraction form
    2,220.80/3,336.04 = 1,343.72/x
  3. Step 3: Cross multiply
    2,220.80x = 3,336.04 × 1,343.72
  4. Step 4: Simplify right side
    2,220.80x = 4,482,708.65
  5. Step 5: Solve for x
    x = 4,482,708.65/2,220.80
  6. Step 6: Final answer
    x = 2,018.51

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Half scale
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Double scale
Find fourth proportional to 2,221.80, 3,337.54 and 1,344.72
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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.