Home / 3,988.60-5,504.19-2,220.19

Finding the Fourth Proportional to 3,988.60, 5,504.19 and 2,220.19

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Solution

The fourth proportional to 3,988.60, 5,504.19 and 2,220.19 is: 3,063.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.60 : 5,504.19 = 2,220.19 : x
  2. Step 2: Convert to fraction form
    3,988.60/5,504.19 = 2,220.19/x
  3. Step 3: Cross multiply
    3,988.60x = 5,504.19 × 2,220.19
  4. Step 4: Simplify right side
    3,988.60x = 12,220,347.60
  5. Step 5: Solve for x
    x = 12,220,347.60/3,988.60
  6. Step 6: Final answer
    x = 3,063.82

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.