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Finding the Fourth Proportional to 3,445.50, 5,167.33 and 980.44

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Solution

The fourth proportional to 3,445.50, 5,167.33 and 980.44 is: 1,470.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,445.50 : 5,167.33 = 980.44 : x
  2. Step 2: Convert to fraction form
    3,445.50/5,167.33 = 980.44/x
  3. Step 3: Cross multiply
    3,445.50x = 5,167.33 × 980.44
  4. Step 4: Simplify right side
    3,445.50x = 5,066,241.66
  5. Step 5: Solve for x
    x = 5,066,241.66/3,445.50
  6. Step 6: Final answer
    x = 1,470.39

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1.5x scale

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.