Home / 8,954.20-13,431.30-3,405.70

Finding the Fourth Proportional to 8,954.20, 13,431.30 and 3,405.70

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Solution

The fourth proportional to 8,954.20, 13,431.30 and 3,405.70 is: 5,108.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,954.20 : 13,431.30 = 3,405.70 : x
  2. Step 2: Convert to fraction form
    8,954.20/13,431.30 = 3,405.70/x
  3. Step 3: Cross multiply
    8,954.20x = 13,431.30 × 3,405.70
  4. Step 4: Simplify right side
    8,954.20x = 45,742,978.41
  5. Step 5: Solve for x
    x = 45,742,978.41/8,954.20
  6. Step 6: Final answer
    x = 5,108.55

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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.