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Finding the Fourth Proportional to 7,281.12, 10,922.04 and 2,087.12

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Solution

The fourth proportional to 7,281.12, 10,922.04 and 2,087.12 is: 3,130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281.12 : 10,922.04 = 2,087.12 : x
  2. Step 2: Convert to fraction form
    7,281.12/10,922.04 = 2,087.12/x
  3. Step 3: Cross multiply
    7,281.12x = 10,922.04 × 2,087.12
  4. Step 4: Simplify right side
    7,281.12x = 22,795,608.12
  5. Step 5: Solve for x
    x = 22,795,608.12/7,281.12
  6. Step 6: Final answer
    x = 3,130.78

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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.