Home / 3,406.63-5,109.96-1,215.36

Finding the Fourth Proportional to 3,406.63, 5,109.96 and 1,215.36

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Solution

The fourth proportional to 3,406.63, 5,109.96 and 1,215.36 is: 1,823.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,406.63 : 5,109.96 = 1,215.36 : x
  2. Step 2: Convert to fraction form
    3,406.63/5,109.96 = 1,215.36/x
  3. Step 3: Cross multiply
    3,406.63x = 5,109.96 × 1,215.36
  4. Step 4: Simplify right side
    3,406.63x = 6,210,440.99
  5. Step 5: Solve for x
    x = 6,210,440.99/3,406.63
  6. Step 6: Final answer
    x = 1,823.05

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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.