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Finding the Fourth Proportional to 8,647.65, 12,959.30 and 4,944.33

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Solution

The fourth proportional to 8,647.65, 12,959.30 and 4,944.33 is: 7,409.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.65 : 12,959.30 = 4,944.33 : x
  2. Step 2: Convert to fraction form
    8,647.65/12,959.30 = 4,944.33/x
  3. Step 3: Cross multiply
    8,647.65x = 12,959.30 × 4,944.33
  4. Step 4: Simplify right side
    8,647.65x = 64,074,990.97
  5. Step 5: Solve for x
    x = 64,074,990.97/8,647.65
  6. Step 6: Final answer
    x = 7,409.53

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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.