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Finding the Fourth Proportional to 5,256.78, 7,894.10 and 3,512.99

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Solution

The fourth proportional to 5,256.78, 7,894.10 and 3,512.99 is: 5,275.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,256.78 : 7,894.10 = 3,512.99 : x
  2. Step 2: Convert to fraction form
    5,256.78/7,894.10 = 3,512.99/x
  3. Step 3: Cross multiply
    5,256.78x = 7,894.10 × 3,512.99
  4. Step 4: Simplify right side
    5,256.78x = 27,731,837.32
  5. Step 5: Solve for x
    x = 27,731,837.32/5,256.78
  6. Step 6: Final answer
    x = 5,275.44

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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.