Home / 5,328.60-7,988.78-3,680.39

Finding the Fourth Proportional to 5,328.60, 7,988.78 and 3,680.39

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Solution

The fourth proportional to 5,328.60, 7,988.78 and 3,680.39 is: 5,517.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.60 : 7,988.78 = 3,680.39 : x
  2. Step 2: Convert to fraction form
    5,328.60/7,988.78 = 3,680.39/x
  3. Step 3: Cross multiply
    5,328.60x = 7,988.78 × 3,680.39
  4. Step 4: Simplify right side
    5,328.60x = 29,401,767.68
  5. Step 5: Solve for x
    x = 29,401,767.68/5,328.60
  6. Step 6: Final answer
    x = 5,517.73

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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.