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Finding the Fourth Proportional to 8,628.62, 11,910.06 and 5,603.66

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Solution

The fourth proportional to 8,628.62, 11,910.06 and 5,603.66 is: 7,734.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.62 : 11,910.06 = 5,603.66 : x
  2. Step 2: Convert to fraction form
    8,628.62/11,910.06 = 5,603.66/x
  3. Step 3: Cross multiply
    8,628.62x = 11,910.06 × 5,603.66
  4. Step 4: Simplify right side
    8,628.62x = 66,739,926.82
  5. Step 5: Solve for x
    x = 66,739,926.82/8,628.62
  6. Step 6: Final answer
    x = 7,734.72

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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.