Home / 2,419.65-3,339-1,371.66

Finding the Fourth Proportional to 2,419.65, 3,339 and 1,371.66

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Solution

The fourth proportional to 2,419.65, 3,339 and 1,371.66 is: 1,892.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.65 : 3,339 = 1,371.66 : x
  2. Step 2: Convert to fraction form
    2,419.65/3,339 = 1,371.66/x
  3. Step 3: Cross multiply
    2,419.65x = 3,339 × 1,371.66
  4. Step 4: Simplify right side
    2,419.65x = 4,579,972.74
  5. Step 5: Solve for x
    x = 4,579,972.74/2,419.65
  6. Step 6: Final answer
    x = 1,892.82

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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.