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Finding the Fourth Proportional to 8,934.66, 12,329.82 and 5,397.21

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Solution

The fourth proportional to 8,934.66, 12,329.82 and 5,397.21 is: 7,448.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,934.66 : 12,329.82 = 5,397.21 : x
  2. Step 2: Convert to fraction form
    8,934.66/12,329.82 = 5,397.21/x
  3. Step 3: Cross multiply
    8,934.66x = 12,329.82 × 5,397.21
  4. Step 4: Simplify right side
    8,934.66x = 66,546,627.80
  5. Step 5: Solve for x
    x = 66,546,627.80/8,934.66
  6. Step 6: Final answer
    x = 7,448.14

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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.