Home / 3,921.15-5,881.73-1,325.91

Finding the Fourth Proportional to 3,921.15, 5,881.73 and 1,325.91

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Solution

The fourth proportional to 3,921.15, 5,881.73 and 1,325.91 is: 1,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.15 : 5,881.73 = 1,325.91 : x
  2. Step 2: Convert to fraction form
    3,921.15/5,881.73 = 1,325.91/x
  3. Step 3: Cross multiply
    3,921.15x = 5,881.73 × 1,325.91
  4. Step 4: Simplify right side
    3,921.15x = 7,798,644.62
  5. Step 5: Solve for x
    x = 7,798,644.62/3,921.15
  6. Step 6: Final answer
    x = 1,988.87

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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.