Home / 3,920.81-5,877.60-1,698.25

Finding the Fourth Proportional to 3,920.81, 5,877.60 and 1,698.25

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Solution

The fourth proportional to 3,920.81, 5,877.60 and 1,698.25 is: 2,545.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.81 : 5,877.60 = 1,698.25 : x
  2. Step 2: Convert to fraction form
    3,920.81/5,877.60 = 1,698.25/x
  3. Step 3: Cross multiply
    3,920.81x = 5,877.60 × 1,698.25
  4. Step 4: Simplify right side
    3,920.81x = 9,981,634.20
  5. Step 5: Solve for x
    x = 9,981,634.20/3,920.81
  6. Step 6: Final answer
    x = 2,545.81

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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.