Home / 3,988.05-5,503.64-2,219.55

Finding the Fourth Proportional to 3,988.05, 5,503.64 and 2,219.55

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Solution

The fourth proportional to 3,988.05, 5,503.64 and 2,219.55 is: 3,063.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.05 : 5,503.64 = 2,219.55 : x
  2. Step 2: Convert to fraction form
    3,988.05/5,503.64 = 2,219.55/x
  3. Step 3: Cross multiply
    3,988.05x = 5,503.64 × 2,219.55
  4. Step 4: Simplify right side
    3,988.05x = 12,215,593.06
  5. Step 5: Solve for x
    x = 12,215,593.06/3,988.05
  6. Step 6: Final answer
    x = 3,063.05

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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.