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Finding the Fourth Proportional to 8,726.69, 12,040.79 and 4,949.03

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Solution

The fourth proportional to 8,726.69, 12,040.79 and 4,949.03 is: 6,828.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.69 : 12,040.79 = 4,949.03 : x
  2. Step 2: Convert to fraction form
    8,726.69/12,040.79 = 4,949.03/x
  3. Step 3: Cross multiply
    8,726.69x = 12,040.79 × 4,949.03
  4. Step 4: Simplify right side
    8,726.69x = 59,590,206.19
  5. Step 5: Solve for x
    x = 59,590,206.19/8,726.69
  6. Step 6: Final answer
    x = 6,828.50

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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.