Home / 1,563.20-2,344.88-408.96

Finding the Fourth Proportional to 1,563.20, 2,344.88 and 408.96

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Solution

The fourth proportional to 1,563.20, 2,344.88 and 408.96 is: 613.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.20 : 2,344.88 = 408.96 : x
  2. Step 2: Convert to fraction form
    1,563.20/2,344.88 = 408.96/x
  3. Step 3: Cross multiply
    1,563.20x = 2,344.88 × 408.96
  4. Step 4: Simplify right side
    1,563.20x = 958,962.12
  5. Step 5: Solve for x
    x = 958,962.12/1,563.20
  6. Step 6: Final answer
    x = 613.46

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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.