Home / 3,407.13-5,109.66-1,215.36

Finding the Fourth Proportional to 3,407.13, 5,109.66 and 1,215.36

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Solution

The fourth proportional to 3,407.13, 5,109.66 and 1,215.36 is: 1,822.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.13 : 5,109.66 = 1,215.36 : x
  2. Step 2: Convert to fraction form
    3,407.13/5,109.66 = 1,215.36/x
  3. Step 3: Cross multiply
    3,407.13x = 5,109.66 × 1,215.36
  4. Step 4: Simplify right side
    3,407.13x = 6,210,076.38
  5. Step 5: Solve for x
    x = 6,210,076.38/3,407.13
  6. Step 6: Final answer
    x = 1,822.67

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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.