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Finding the Fourth Proportional to 2,822.39, 4,234.53 and 974.78

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Solution

The fourth proportional to 2,822.39, 4,234.53 and 974.78 is: 1,462.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.39 : 4,234.53 = 974.78 : x
  2. Step 2: Convert to fraction form
    2,822.39/4,234.53 = 974.78/x
  3. Step 3: Cross multiply
    2,822.39x = 4,234.53 × 974.78
  4. Step 4: Simplify right side
    2,822.39x = 4,127,735.15
  5. Step 5: Solve for x
    x = 4,127,735.15/2,822.39
  6. Step 6: Final answer
    x = 1,462.50

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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.