Home / 1,447.85-2,170.76-743.33

Finding the Fourth Proportional to 1,447.85, 2,170.76 and 743.33

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Solution

The fourth proportional to 1,447.85, 2,170.76 and 743.33 is: 1,114.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.85 : 2,170.76 = 743.33 : x
  2. Step 2: Convert to fraction form
    1,447.85/2,170.76 = 743.33/x
  3. Step 3: Cross multiply
    1,447.85x = 2,170.76 × 743.33
  4. Step 4: Simplify right side
    1,447.85x = 1,613,576.46
  5. Step 5: Solve for x
    x = 1,613,576.46/1,447.85
  6. Step 6: Final answer
    x = 1,114.47

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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.