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Finding the Fourth Proportional to 8,506.65, 12,759.98 and 2,663.72

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Solution

The fourth proportional to 8,506.65, 12,759.98 and 2,663.72 is: 3,995.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,506.65 : 12,759.98 = 2,663.72 : x
  2. Step 2: Convert to fraction form
    8,506.65/12,759.98 = 2,663.72/x
  3. Step 3: Cross multiply
    8,506.65x = 12,759.98 × 2,663.72
  4. Step 4: Simplify right side
    8,506.65x = 33,988,999.64
  5. Step 5: Solve for x
    x = 33,988,999.64/8,506.65
  6. Step 6: Final answer
    x = 3,995.58

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1.5x scale

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.