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Finding the Fourth Proportional to 2,211.96, 3,318.03 and 751.13

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Solution

The fourth proportional to 2,211.96, 3,318.03 and 751.13 is: 1,126.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.96 : 3,318.03 = 751.13 : x
  2. Step 2: Convert to fraction form
    2,211.96/3,318.03 = 751.13/x
  3. Step 3: Cross multiply
    2,211.96x = 3,318.03 × 751.13
  4. Step 4: Simplify right side
    2,211.96x = 2,492,255.28
  5. Step 5: Solve for x
    x = 2,492,255.28/2,211.96
  6. Step 6: Final answer
    x = 1,126.72

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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.