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Finding the Fourth Proportional to 3,315.52, 4,972.48 and 974.96

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Solution

The fourth proportional to 3,315.52, 4,972.48 and 974.96 is: 1,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.52 : 4,972.48 = 974.96 : x
  2. Step 2: Convert to fraction form
    3,315.52/4,972.48 = 974.96/x
  3. Step 3: Cross multiply
    3,315.52x = 4,972.48 × 974.96
  4. Step 4: Simplify right side
    3,315.52x = 4,847,969.10
  5. Step 5: Solve for x
    x = 4,847,969.10/3,315.52
  6. Step 6: Final answer
    x = 1,462.20

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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.