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Finding the Fourth Proportional to 5,422.78, 7,482.99 and 3,065.50

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Solution

The fourth proportional to 5,422.78, 7,482.99 and 3,065.50 is: 4,230.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.78 : 7,482.99 = 3,065.50 : x
  2. Step 2: Convert to fraction form
    5,422.78/7,482.99 = 3,065.50/x
  3. Step 3: Cross multiply
    5,422.78x = 7,482.99 × 3,065.50
  4. Step 4: Simplify right side
    5,422.78x = 22,939,105.85
  5. Step 5: Solve for x
    x = 22,939,105.85/5,422.78
  6. Step 6: Final answer
    x = 4,230.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.