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Finding the Fourth Proportional to 3,253.21, 4,880.12 and 913.21

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Solution

The fourth proportional to 3,253.21, 4,880.12 and 913.21 is: 1,369.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,253.21 : 4,880.12 = 913.21 : x
  2. Step 2: Convert to fraction form
    3,253.21/4,880.12 = 913.21/x
  3. Step 3: Cross multiply
    3,253.21x = 4,880.12 × 913.21
  4. Step 4: Simplify right side
    3,253.21x = 4,456,557.62
  5. Step 5: Solve for x
    x = 4,456,557.62/3,253.21
  6. Step 6: Final answer
    x = 1,369.90

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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.