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Finding the Fourth Proportional to 3,339.79, 5,010.14 and 1,391.54

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Solution

The fourth proportional to 3,339.79, 5,010.14 and 1,391.54 is: 2,087.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,339.79 : 5,010.14 = 1,391.54 : x
  2. Step 2: Convert to fraction form
    3,339.79/5,010.14 = 1,391.54/x
  3. Step 3: Cross multiply
    3,339.79x = 5,010.14 × 1,391.54
  4. Step 4: Simplify right side
    3,339.79x = 6,971,778.21
  5. Step 5: Solve for x
    x = 6,971,778.21/3,339.79
  6. Step 6: Final answer
    x = 2,087.49

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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.