Home / 2,521.80-3,479.36-1,578.29

Finding the Fourth Proportional to 2,521.80, 3,479.36 and 1,578.29

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Solution

The fourth proportional to 2,521.80, 3,479.36 and 1,578.29 is: 2,177.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.80 : 3,479.36 = 1,578.29 : x
  2. Step 2: Convert to fraction form
    2,521.80/3,479.36 = 1,578.29/x
  3. Step 3: Cross multiply
    2,521.80x = 3,479.36 × 1,578.29
  4. Step 4: Simplify right side
    2,521.80x = 5,491,413.81
  5. Step 5: Solve for x
    x = 5,491,413.81/2,521.80
  6. Step 6: Final answer
    x = 2,177.58

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1.5x scale

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.