Home / 2,578.97-3,864.98-1,407.21

Finding the Fourth Proportional to 2,578.97, 3,864.98 and 1,407.21

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Solution

The fourth proportional to 2,578.97, 3,864.98 and 1,407.21 is: 2,108.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.97 : 3,864.98 = 1,407.21 : x
  2. Step 2: Convert to fraction form
    2,578.97/3,864.98 = 1,407.21/x
  3. Step 3: Cross multiply
    2,578.97x = 3,864.98 × 1,407.21
  4. Step 4: Simplify right side
    2,578.97x = 5,438,851.69
  5. Step 5: Solve for x
    x = 5,438,851.69/2,578.97
  6. Step 6: Final answer
    x = 2,108.93

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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.