Home / 4,147.19-6,221.40-1,225.11

Finding the Fourth Proportional to 4,147.19, 6,221.40 and 1,225.11

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Solution

The fourth proportional to 4,147.19, 6,221.40 and 1,225.11 is: 1,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,147.19 : 6,221.40 = 1,225.11 : x
  2. Step 2: Convert to fraction form
    4,147.19/6,221.40 = 1,225.11/x
  3. Step 3: Cross multiply
    4,147.19x = 6,221.40 × 1,225.11
  4. Step 4: Simplify right side
    4,147.19x = 7,621,918.09
  5. Step 5: Solve for x
    x = 7,621,918.09/4,147.19
  6. Step 6: Final answer
    x = 1,837.85

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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.