Home / 5,718.31-8,578.16-2,019.78

Finding the Fourth Proportional to 5,718.31, 8,578.16 and 2,019.78

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Solution

The fourth proportional to 5,718.31, 8,578.16 and 2,019.78 is: 3,029.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.31 : 8,578.16 = 2,019.78 : x
  2. Step 2: Convert to fraction form
    5,718.31/8,578.16 = 2,019.78/x
  3. Step 3: Cross multiply
    5,718.31x = 8,578.16 × 2,019.78
  4. Step 4: Simplify right side
    5,718.31x = 17,326,012.40
  5. Step 5: Solve for x
    x = 17,326,012.40/5,718.31
  6. Step 6: Final answer
    x = 3,029.92

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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.