Home / 2,419.27-3,339.71-1,981.87

Finding the Fourth Proportional to 2,419.27, 3,339.71 and 1,981.87

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Solution

The fourth proportional to 2,419.27, 3,339.71 and 1,981.87 is: 2,735.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.27 : 3,339.71 = 1,981.87 : x
  2. Step 2: Convert to fraction form
    2,419.27/3,339.71 = 1,981.87/x
  3. Step 3: Cross multiply
    2,419.27x = 3,339.71 × 1,981.87
  4. Step 4: Simplify right side
    2,419.27x = 6,618,871.06
  5. Step 5: Solve for x
    x = 6,618,871.06/2,419.27
  6. Step 6: Final answer
    x = 2,735.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.