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Finding the Fourth Proportional to 3,375, 5,040.33 and 2,913.72

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Solution

The fourth proportional to 3,375, 5,040.33 and 2,913.72 is: 4,351.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375 : 5,040.33 = 2,913.72 : x
  2. Step 2: Convert to fraction form
    3,375/5,040.33 = 2,913.72/x
  3. Step 3: Cross multiply
    3,375x = 5,040.33 × 2,913.72
  4. Step 4: Simplify right side
    3,375x = 14,686,110.33
  5. Step 5: Solve for x
    x = 14,686,110.33/3,375
  6. Step 6: Final answer
    x = 4,351.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.