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Finding the Fourth Proportional to 8,866.65, 12,240.99 and 5,886.56

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Solution

The fourth proportional to 8,866.65, 12,240.99 and 5,886.56 is: 8,126.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.65 : 12,240.99 = 5,886.56 : x
  2. Step 2: Convert to fraction form
    8,866.65/12,240.99 = 5,886.56/x
  3. Step 3: Cross multiply
    8,866.65x = 12,240.99 × 5,886.56
  4. Step 4: Simplify right side
    8,866.65x = 72,057,322.09
  5. Step 5: Solve for x
    x = 72,057,322.09/8,866.65
  6. Step 6: Final answer
    x = 8,126.78

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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.