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Finding the Fourth Proportional to 8,777.73, 12,112.83 and 5,239.65

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Solution

The fourth proportional to 8,777.73, 12,112.83 and 5,239.65 is: 7,230.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.73 : 12,112.83 = 5,239.65 : x
  2. Step 2: Convert to fraction form
    8,777.73/12,112.83 = 5,239.65/x
  3. Step 3: Cross multiply
    8,777.73x = 12,112.83 × 5,239.65
  4. Step 4: Simplify right side
    8,777.73x = 63,466,989.71
  5. Step 5: Solve for x
    x = 63,466,989.71/8,777.73
  6. Step 6: Final answer
    x = 7,230.46

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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.