Home / 5,476.17-8,220.40-2,191.55

Finding the Fourth Proportional to 5,476.17, 8,220.40 and 2,191.55

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Solution

The fourth proportional to 5,476.17, 8,220.40 and 2,191.55 is: 3,289.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,476.17 : 8,220.40 = 2,191.55 : x
  2. Step 2: Convert to fraction form
    5,476.17/8,220.40 = 2,191.55/x
  3. Step 3: Cross multiply
    5,476.17x = 8,220.40 × 2,191.55
  4. Step 4: Simplify right side
    5,476.17x = 18,015,432.69
  5. Step 5: Solve for x
    x = 18,015,432.69/5,476.17
  6. Step 6: Final answer
    x = 3,289.79

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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.