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Finding the Fourth Proportional to 8,649.08, 11,920.38 and 6,975.80

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Solution

The fourth proportional to 8,649.08, 11,920.38 and 6,975.80 is: 9,614.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.08 : 11,920.38 = 6,975.80 : x
  2. Step 2: Convert to fraction form
    8,649.08/11,920.38 = 6,975.80/x
  3. Step 3: Cross multiply
    8,649.08x = 11,920.38 × 6,975.80
  4. Step 4: Simplify right side
    8,649.08x = 83,154,186.80
  5. Step 5: Solve for x
    x = 83,154,186.80/8,649.08
  6. Step 6: Final answer
    x = 9,614.22

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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.