Home / 3,211.80-4,812.30-2,747.40

Finding the Fourth Proportional to 3,211.80, 4,812.30 and 2,747.40

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Solution

The fourth proportional to 3,211.80, 4,812.30 and 2,747.40 is: 4,116.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.80 : 4,812.30 = 2,747.40 : x
  2. Step 2: Convert to fraction form
    3,211.80/4,812.30 = 2,747.40/x
  3. Step 3: Cross multiply
    3,211.80x = 4,812.30 × 2,747.40
  4. Step 4: Simplify right side
    3,211.80x = 13,221,313.02
  5. Step 5: Solve for x
    x = 13,221,313.02/3,211.80
  6. Step 6: Final answer
    x = 4,116.48

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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.