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Finding the Fourth Proportional to 8,889.79, 13,335.38 and 2,649.32

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Solution

The fourth proportional to 8,889.79, 13,335.38 and 2,649.32 is: 3,974.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.79 : 13,335.38 = 2,649.32 : x
  2. Step 2: Convert to fraction form
    8,889.79/13,335.38 = 2,649.32/x
  3. Step 3: Cross multiply
    8,889.79x = 13,335.38 × 2,649.32
  4. Step 4: Simplify right side
    8,889.79x = 35,329,736.52
  5. Step 5: Solve for x
    x = 35,329,736.52/8,889.79
  6. Step 6: Final answer
    x = 3,974.19

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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.