Home / 3,742.20-5,609.25-1,985.31

Finding the Fourth Proportional to 3,742.20, 5,609.25 and 1,985.31

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Solution

The fourth proportional to 3,742.20, 5,609.25 and 1,985.31 is: 2,975.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,742.20 : 5,609.25 = 1,985.31 : x
  2. Step 2: Convert to fraction form
    3,742.20/5,609.25 = 1,985.31/x
  3. Step 3: Cross multiply
    3,742.20x = 5,609.25 × 1,985.31
  4. Step 4: Simplify right side
    3,742.20x = 11,136,100.12
  5. Step 5: Solve for x
    x = 11,136,100.12/3,742.20
  6. Step 6: Final answer
    x = 2,975.82

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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.