Home / 3,948.52-5,920.74-2,100.64

Finding the Fourth Proportional to 3,948.52, 5,920.74 and 2,100.64

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Solution

The fourth proportional to 3,948.52, 5,920.74 and 2,100.64 is: 3,149.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.52 : 5,920.74 = 2,100.64 : x
  2. Step 2: Convert to fraction form
    3,948.52/5,920.74 = 2,100.64/x
  3. Step 3: Cross multiply
    3,948.52x = 5,920.74 × 2,100.64
  4. Step 4: Simplify right side
    3,948.52x = 12,437,343.27
  5. Step 5: Solve for x
    x = 12,437,343.27/3,948.52
  6. Step 6: Final answer
    x = 3,149.87

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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.