Home / 8,961.60-13,438.05-2,720.49

Finding the Fourth Proportional to 8,961.60, 13,438.05 and 2,720.49

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Solution

The fourth proportional to 8,961.60, 13,438.05 and 2,720.49 is: 4,079.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.60 : 13,438.05 = 2,720.49 : x
  2. Step 2: Convert to fraction form
    8,961.60/13,438.05 = 2,720.49/x
  3. Step 3: Cross multiply
    8,961.60x = 13,438.05 × 2,720.49
  4. Step 4: Simplify right side
    8,961.60x = 36,558,080.64
  5. Step 5: Solve for x
    x = 36,558,080.64/8,961.60
  6. Step 6: Final answer
    x = 4,079.41

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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.