Home / 3,861.80-5,330.82-3,247.40

Finding the Fourth Proportional to 3,861.80, 5,330.82 and 3,247.40

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Solution

The fourth proportional to 3,861.80, 5,330.82 and 3,247.40 is: 4,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.80 : 5,330.82 = 3,247.40 : x
  2. Step 2: Convert to fraction form
    3,861.80/5,330.82 = 3,247.40/x
  3. Step 3: Cross multiply
    3,861.80x = 5,330.82 × 3,247.40
  4. Step 4: Simplify right side
    3,861.80x = 17,311,304.87
  5. Step 5: Solve for x
    x = 17,311,304.87/3,861.80
  6. Step 6: Final answer
    x = 4,482.70

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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.