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Finding the Fourth Proportional to 8,860.01, 12,238.49 and 6,618

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Solution

The fourth proportional to 8,860.01, 12,238.49 and 6,618 is: 9,141.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.01 : 12,238.49 = 6,618 : x
  2. Step 2: Convert to fraction form
    8,860.01/12,238.49 = 6,618/x
  3. Step 3: Cross multiply
    8,860.01x = 12,238.49 × 6,618
  4. Step 4: Simplify right side
    8,860.01x = 80,994,326.82
  5. Step 5: Solve for x
    x = 80,994,326.82/8,860.01
  6. Step 6: Final answer
    x = 9,141.56

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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.