Home / 3,147.13-4,722.95-2,109.11

Finding the Fourth Proportional to 3,147.13, 4,722.95 and 2,109.11

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Solution

The fourth proportional to 3,147.13, 4,722.95 and 2,109.11 is: 3,165.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.13 : 4,722.95 = 2,109.11 : x
  2. Step 2: Convert to fraction form
    3,147.13/4,722.95 = 2,109.11/x
  3. Step 3: Cross multiply
    3,147.13x = 4,722.95 × 2,109.11
  4. Step 4: Simplify right side
    3,147.13x = 9,961,238.15
  5. Step 5: Solve for x
    x = 9,961,238.15/3,147.13
  6. Step 6: Final answer
    x = 3,165.18

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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.