Home / 5,479.78-8,220.47-2,882.90

Finding the Fourth Proportional to 5,479.78, 8,220.47 and 2,882.90

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Solution

The fourth proportional to 5,479.78, 8,220.47 and 2,882.90 is: 4,324.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.78 : 8,220.47 = 2,882.90 : x
  2. Step 2: Convert to fraction form
    5,479.78/8,220.47 = 2,882.90/x
  3. Step 3: Cross multiply
    5,479.78x = 8,220.47 × 2,882.90
  4. Step 4: Simplify right side
    5,479.78x = 23,698,792.96
  5. Step 5: Solve for x
    x = 23,698,792.96/5,479.78
  6. Step 6: Final answer
    x = 4,324.77

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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.