Home / 3,988.53-5,503.92-2,220.09

Finding the Fourth Proportional to 3,988.53, 5,503.92 and 2,220.09

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Solution

The fourth proportional to 3,988.53, 5,503.92 and 2,220.09 is: 3,063.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.53 : 5,503.92 = 2,220.09 : x
  2. Step 2: Convert to fraction form
    3,988.53/5,503.92 = 2,220.09/x
  3. Step 3: Cross multiply
    3,988.53x = 5,503.92 × 2,220.09
  4. Step 4: Simplify right side
    3,988.53x = 12,219,197.75
  5. Step 5: Solve for x
    x = 12,219,197.75/3,988.53
  6. Step 6: Final answer
    x = 3,063.58

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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.