Home / 3,586.50-5,380.11-1,278.90

Finding the Fourth Proportional to 3,586.50, 5,380.11 and 1,278.90

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Solution

The fourth proportional to 3,586.50, 5,380.11 and 1,278.90 is: 1,918.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,586.50 : 5,380.11 = 1,278.90 : x
  2. Step 2: Convert to fraction form
    3,586.50/5,380.11 = 1,278.90/x
  3. Step 3: Cross multiply
    3,586.50x = 5,380.11 × 1,278.90
  4. Step 4: Simplify right side
    3,586.50x = 6,880,622.68
  5. Step 5: Solve for x
    x = 6,880,622.68/3,586.50
  6. Step 6: Final answer
    x = 1,918.48

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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.