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Finding the Fourth Proportional to 8,934.75, 12,329.97 and 5,209.47

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Solution

The fourth proportional to 8,934.75, 12,329.97 and 5,209.47 is: 7,189.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,934.75 : 12,329.97 = 5,209.47 : x
  2. Step 2: Convert to fraction form
    8,934.75/12,329.97 = 5,209.47/x
  3. Step 3: Cross multiply
    8,934.75x = 12,329.97 × 5,209.47
  4. Step 4: Simplify right side
    8,934.75x = 64,232,582.77
  5. Step 5: Solve for x
    x = 64,232,582.77/8,934.75
  6. Step 6: Final answer
    x = 7,189.07

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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.