Home / 3,921.16-5,881.98-1,323.88

Finding the Fourth Proportional to 3,921.16, 5,881.98 and 1,323.88

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Solution

The fourth proportional to 3,921.16, 5,881.98 and 1,323.88 is: 1,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.16 : 5,881.98 = 1,323.88 : x
  2. Step 2: Convert to fraction form
    3,921.16/5,881.98 = 1,323.88/x
  3. Step 3: Cross multiply
    3,921.16x = 5,881.98 × 1,323.88
  4. Step 4: Simplify right side
    3,921.16x = 7,787,035.68
  5. Step 5: Solve for x
    x = 7,787,035.68/3,921.16
  6. Step 6: Final answer
    x = 1,985.90

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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.