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Finding the Fourth Proportional to 3,013.78, 4,520.64 and 822.50

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Solution

The fourth proportional to 3,013.78, 4,520.64 and 822.50 is: 1,233.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,013.78 : 4,520.64 = 822.50 : x
  2. Step 2: Convert to fraction form
    3,013.78/4,520.64 = 822.50/x
  3. Step 3: Cross multiply
    3,013.78x = 4,520.64 × 822.50
  4. Step 4: Simplify right side
    3,013.78x = 3,718,237.70
  5. Step 5: Solve for x
    x = 3,718,237.70/3,013.78
  6. Step 6: Final answer
    x = 1,233.75

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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.