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Finding the Fourth Proportional to 7,340.40, 10,987.56 and 5,480.88

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Solution

The fourth proportional to 7,340.40, 10,987.56 and 5,480.88 is: 8,204.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,340.40 : 10,987.56 = 5,480.88 : x
  2. Step 2: Convert to fraction form
    7,340.40/10,987.56 = 5,480.88/x
  3. Step 3: Cross multiply
    7,340.40x = 10,987.56 × 5,480.88
  4. Step 4: Simplify right side
    7,340.40x = 60,221,497.85
  5. Step 5: Solve for x
    x = 60,221,497.85/7,340.40
  6. Step 6: Final answer
    x = 8,204.12

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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.