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Finding the Fourth Proportional to 9,341.26, 12,891.84 and 6,979.30

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Solution

The fourth proportional to 9,341.26, 12,891.84 and 6,979.30 is: 9,632.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,341.26 : 12,891.84 = 6,979.30 : x
  2. Step 2: Convert to fraction form
    9,341.26/12,891.84 = 6,979.30/x
  3. Step 3: Cross multiply
    9,341.26x = 12,891.84 × 6,979.30
  4. Step 4: Simplify right side
    9,341.26x = 89,975,954.45
  5. Step 5: Solve for x
    x = 89,975,954.45/9,341.26
  6. Step 6: Final answer
    x = 9,632.11

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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.