Home / 5,479.25-8,222.51-2,557.78

Finding the Fourth Proportional to 5,479.25, 8,222.51 and 2,557.78

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Solution

The fourth proportional to 5,479.25, 8,222.51 and 2,557.78 is: 3,838.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.25 : 8,222.51 = 2,557.78 : x
  2. Step 2: Convert to fraction form
    5,479.25/8,222.51 = 2,557.78/x
  3. Step 3: Cross multiply
    5,479.25x = 8,222.51 × 2,557.78
  4. Step 4: Simplify right side
    5,479.25x = 21,031,357.47
  5. Step 5: Solve for x
    x = 21,031,357.47/5,479.25
  6. Step 6: Final answer
    x = 3,838.37

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1.5x scale

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.