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Finding the Fourth Proportional to 8,927.78, 13,391.81 and 4,248.28

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Solution

The fourth proportional to 8,927.78, 13,391.81 and 4,248.28 is: 6,372.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,927.78 : 13,391.81 = 4,248.28 : x
  2. Step 2: Convert to fraction form
    8,927.78/13,391.81 = 4,248.28/x
  3. Step 3: Cross multiply
    8,927.78x = 13,391.81 × 4,248.28
  4. Step 4: Simplify right side
    8,927.78x = 56,892,070.39
  5. Step 5: Solve for x
    x = 56,892,070.39/8,927.78
  6. Step 6: Final answer
    x = 6,372.48

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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.