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Finding the Fourth Proportional to 8,549.78, 12,824.70 and 2,393.78

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Solution

The fourth proportional to 8,549.78, 12,824.70 and 2,393.78 is: 3,590.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,549.78 : 12,824.70 = 2,393.78 : x
  2. Step 2: Convert to fraction form
    8,549.78/12,824.70 = 2,393.78/x
  3. Step 3: Cross multiply
    8,549.78x = 12,824.70 × 2,393.78
  4. Step 4: Simplify right side
    8,549.78x = 30,699,510.37
  5. Step 5: Solve for x
    x = 30,699,510.37/8,549.78
  6. Step 6: Final answer
    x = 3,590.68

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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.