Home / 8,961.05-13,443.80-3,117.71

Finding the Fourth Proportional to 8,961.05, 13,443.80 and 3,117.71

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Solution

The fourth proportional to 8,961.05, 13,443.80 and 3,117.71 is: 4,677.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.05 : 13,443.80 = 3,117.71 : x
  2. Step 2: Convert to fraction form
    8,961.05/13,443.80 = 3,117.71/x
  3. Step 3: Cross multiply
    8,961.05x = 13,443.80 × 3,117.71
  4. Step 4: Simplify right side
    8,961.05x = 41,913,786.89
  5. Step 5: Solve for x
    x = 41,913,786.89/8,961.05
  6. Step 6: Final answer
    x = 4,677.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.