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Finding the Fourth Proportional to 3,162.88, 4,744.32 and 1,518.40

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Solution

The fourth proportional to 3,162.88, 4,744.32 and 1,518.40 is: 2,277.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,162.88 : 4,744.32 = 1,518.40 : x
  2. Step 2: Convert to fraction form
    3,162.88/4,744.32 = 1,518.40/x
  3. Step 3: Cross multiply
    3,162.88x = 4,744.32 × 1,518.40
  4. Step 4: Simplify right side
    3,162.88x = 7,203,775.49
  5. Step 5: Solve for x
    x = 7,203,775.49/3,162.88
  6. Step 6: Final answer
    x = 2,277.60

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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.