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Finding the Fourth Proportional to 8,959.28, 13,427.76 and 4,788.99

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Solution

The fourth proportional to 8,959.28, 13,427.76 and 4,788.99 is: 7,177.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.28 : 13,427.76 = 4,788.99 : x
  2. Step 2: Convert to fraction form
    8,959.28/13,427.76 = 4,788.99/x
  3. Step 3: Cross multiply
    8,959.28x = 13,427.76 × 4,788.99
  4. Step 4: Simplify right side
    8,959.28x = 64,305,408.36
  5. Step 5: Solve for x
    x = 64,305,408.36/8,959.28
  6. Step 6: Final answer
    x = 7,177.52

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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.