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Finding the Fourth Proportional to 7,988.60, 11,988.58 and 2,794.52

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Solution

The fourth proportional to 7,988.60, 11,988.58 and 2,794.52 is: 4,193.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.60 : 11,988.58 = 2,794.52 : x
  2. Step 2: Convert to fraction form
    7,988.60/11,988.58 = 2,794.52/x
  3. Step 3: Cross multiply
    7,988.60x = 11,988.58 × 2,794.52
  4. Step 4: Simplify right side
    7,988.60x = 33,502,326.58
  5. Step 5: Solve for x
    x = 33,502,326.58/7,988.60
  6. Step 6: Final answer
    x = 4,193.77

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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.