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Finding the Fourth Proportional to 8,788.95, 12,129.48 and 5,252.09

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Solution

The fourth proportional to 8,788.95, 12,129.48 and 5,252.09 is: 7,248.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.95 : 12,129.48 = 5,252.09 : x
  2. Step 2: Convert to fraction form
    8,788.95/12,129.48 = 5,252.09/x
  3. Step 3: Cross multiply
    8,788.95x = 12,129.48 × 5,252.09
  4. Step 4: Simplify right side
    8,788.95x = 63,705,059.97
  5. Step 5: Solve for x
    x = 63,705,059.97/8,788.95
  6. Step 6: Final answer
    x = 7,248.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.