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Finding the Fourth Proportional to 8,393.84, 12,590.40 and 2,850.02

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Solution

The fourth proportional to 8,393.84, 12,590.40 and 2,850.02 is: 4,274.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.84 : 12,590.40 = 2,850.02 : x
  2. Step 2: Convert to fraction form
    8,393.84/12,590.40 = 2,850.02/x
  3. Step 3: Cross multiply
    8,393.84x = 12,590.40 × 2,850.02
  4. Step 4: Simplify right side
    8,393.84x = 35,882,891.81
  5. Step 5: Solve for x
    x = 35,882,891.81/8,393.84
  6. Step 6: Final answer
    x = 4,274.91

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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.