Home / 3,988.66-5,503.73-2,220.26

Finding the Fourth Proportional to 3,988.66, 5,503.73 and 2,220.26

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Solution

The fourth proportional to 3,988.66, 5,503.73 and 2,220.26 is: 3,063.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.66 : 5,503.73 = 2,220.26 : x
  2. Step 2: Convert to fraction form
    3,988.66/5,503.73 = 2,220.26/x
  3. Step 3: Cross multiply
    3,988.66x = 5,503.73 × 2,220.26
  4. Step 4: Simplify right side
    3,988.66x = 12,219,711.57
  5. Step 5: Solve for x
    x = 12,219,711.57/3,988.66
  6. Step 6: Final answer
    x = 3,063.61

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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.