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Finding the Fourth Proportional to 8,117.91, 11,209.05 and 6,354.54

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Solution

The fourth proportional to 8,117.91, 11,209.05 and 6,354.54 is: 8,774.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.91 : 11,209.05 = 6,354.54 : x
  2. Step 2: Convert to fraction form
    8,117.91/11,209.05 = 6,354.54/x
  3. Step 3: Cross multiply
    8,117.91x = 11,209.05 × 6,354.54
  4. Step 4: Simplify right side
    8,117.91x = 71,228,356.59
  5. Step 5: Solve for x
    x = 71,228,356.59/8,117.91
  6. Step 6: Final answer
    x = 8,774.22

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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.