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Finding the Fourth Proportional to 8,934.62, 12,345.10 and 8,619.26

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Solution

The fourth proportional to 8,934.62, 12,345.10 and 8,619.26 is: 11,909.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,934.62 : 12,345.10 = 8,619.26 : x
  2. Step 2: Convert to fraction form
    8,934.62/12,345.10 = 8,619.26/x
  3. Step 3: Cross multiply
    8,934.62x = 12,345.10 × 8,619.26
  4. Step 4: Simplify right side
    8,934.62x = 106,405,626.63
  5. Step 5: Solve for x
    x = 106,405,626.63/8,934.62
  6. Step 6: Final answer
    x = 11,909.36

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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.