Home / 4,221.70-6,332.55-1,880.80

Finding the Fourth Proportional to 4,221.70, 6,332.55 and 1,880.80

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Solution

The fourth proportional to 4,221.70, 6,332.55 and 1,880.80 is: 2,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.70 : 6,332.55 = 1,880.80 : x
  2. Step 2: Convert to fraction form
    4,221.70/6,332.55 = 1,880.80/x
  3. Step 3: Cross multiply
    4,221.70x = 6,332.55 × 1,880.80
  4. Step 4: Simplify right side
    4,221.70x = 11,910,260.04
  5. Step 5: Solve for x
    x = 11,910,260.04/4,221.70
  6. Step 6: Final answer
    x = 2,821.20

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Double scale
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Similar ratio
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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.