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Finding the Fourth Proportional to 8,934.39, 12,332.31 and 5,209.11

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Solution

The fourth proportional to 8,934.39, 12,332.31 and 5,209.11 is: 7,190.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,934.39 : 12,332.31 = 5,209.11 : x
  2. Step 2: Convert to fraction form
    8,934.39/12,332.31 = 5,209.11/x
  3. Step 3: Cross multiply
    8,934.39x = 12,332.31 × 5,209.11
  4. Step 4: Simplify right side
    8,934.39x = 64,240,359.34
  5. Step 5: Solve for x
    x = 64,240,359.34/8,934.39
  6. Step 6: Final answer
    x = 7,190.23

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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.