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Finding the Fourth Proportional to 7,552.40, 11,330.40 and 3,855.20

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Solution

The fourth proportional to 7,552.40, 11,330.40 and 3,855.20 is: 5,783.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,552.40 : 11,330.40 = 3,855.20 : x
  2. Step 2: Convert to fraction form
    7,552.40/11,330.40 = 3,855.20/x
  3. Step 3: Cross multiply
    7,552.40x = 11,330.40 × 3,855.20
  4. Step 4: Simplify right side
    7,552.40x = 43,680,958.08
  5. Step 5: Solve for x
    x = 43,680,958.08/7,552.40
  6. Step 6: Final answer
    x = 5,783.72

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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.