Home / 5,478.77-8,220.22-3,289.02

Finding the Fourth Proportional to 5,478.77, 8,220.22 and 3,289.02

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Solution

The fourth proportional to 5,478.77, 8,220.22 and 3,289.02 is: 4,934.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.77 : 8,220.22 = 3,289.02 : x
  2. Step 2: Convert to fraction form
    5,478.77/8,220.22 = 3,289.02/x
  3. Step 3: Cross multiply
    5,478.77x = 8,220.22 × 3,289.02
  4. Step 4: Simplify right side
    5,478.77x = 27,036,496.76
  5. Step 5: Solve for x
    x = 27,036,496.76/5,478.77
  6. Step 6: Final answer
    x = 4,934.78

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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.