Home / 5,477.77-8,220.61-2,191.78

Finding the Fourth Proportional to 5,477.77, 8,220.61 and 2,191.78

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Solution

The fourth proportional to 5,477.77, 8,220.61 and 2,191.78 is: 3,289.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,477.77 : 8,220.61 = 2,191.78 : x
  2. Step 2: Convert to fraction form
    5,477.77/8,220.61 = 2,191.78/x
  3. Step 3: Cross multiply
    5,477.77x = 8,220.61 × 2,191.78
  4. Step 4: Simplify right side
    5,477.77x = 18,017,727.48
  5. Step 5: Solve for x
    x = 18,017,727.48/5,477.77
  6. Step 6: Final answer
    x = 3,289.25

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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.