Home / 8,991.21-13,486.82-3,146.45

Finding the Fourth Proportional to 8,991.21, 13,486.82 and 3,146.45

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Solution

The fourth proportional to 8,991.21, 13,486.82 and 3,146.45 is: 4,719.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.21 : 13,486.82 = 3,146.45 : x
  2. Step 2: Convert to fraction form
    8,991.21/13,486.82 = 3,146.45/x
  3. Step 3: Cross multiply
    8,991.21x = 13,486.82 × 3,146.45
  4. Step 4: Simplify right side
    8,991.21x = 42,435,622.77
  5. Step 5: Solve for x
    x = 42,435,622.77/8,991.21
  6. Step 6: Final answer
    x = 4,719.68

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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.