Home / 7,686.78-11,531.79-2,492.25

Finding the Fourth Proportional to 7,686.78, 11,531.79 and 2,492.25

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Solution

The fourth proportional to 7,686.78, 11,531.79 and 2,492.25 is: 3,738.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,686.78 : 11,531.79 = 2,492.25 : x
  2. Step 2: Convert to fraction form
    7,686.78/11,531.79 = 2,492.25/x
  3. Step 3: Cross multiply
    7,686.78x = 11,531.79 × 2,492.25
  4. Step 4: Simplify right side
    7,686.78x = 28,740,103.63
  5. Step 5: Solve for x
    x = 28,740,103.63/7,686.78
  6. Step 6: Final answer
    x = 3,738.90

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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.