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Finding the Fourth Proportional to 8,967.65, 12,375.13 and 5,190.29

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Solution

The fourth proportional to 8,967.65, 12,375.13 and 5,190.29 is: 7,162.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,967.65 : 12,375.13 = 5,190.29 : x
  2. Step 2: Convert to fraction form
    8,967.65/12,375.13 = 5,190.29/x
  3. Step 3: Cross multiply
    8,967.65x = 12,375.13 × 5,190.29
  4. Step 4: Simplify right side
    8,967.65x = 64,230,513.49
  5. Step 5: Solve for x
    x = 64,230,513.49/8,967.65
  6. Step 6: Final answer
    x = 7,162.47

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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.