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Finding the Fourth Proportional to 8,959.92, 13,440.12 and 2,386.12

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Solution

The fourth proportional to 8,959.92, 13,440.12 and 2,386.12 is: 3,579.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.92 : 13,440.12 = 2,386.12 : x
  2. Step 2: Convert to fraction form
    8,959.92/13,440.12 = 2,386.12/x
  3. Step 3: Cross multiply
    8,959.92x = 13,440.12 × 2,386.12
  4. Step 4: Simplify right side
    8,959.92x = 32,069,660.00
  5. Step 5: Solve for x
    x = 32,069,660.00/8,959.92
  6. Step 6: Final answer
    x = 3,579.24

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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.