Home / 4,220.18-6,331.55-2,989.97

Finding the Fourth Proportional to 4,220.18, 6,331.55 and 2,989.97

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Solution

The fourth proportional to 4,220.18, 6,331.55 and 2,989.97 is: 4,485.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.18 : 6,331.55 = 2,989.97 : x
  2. Step 2: Convert to fraction form
    4,220.18/6,331.55 = 2,989.97/x
  3. Step 3: Cross multiply
    4,220.18x = 6,331.55 × 2,989.97
  4. Step 4: Simplify right side
    4,220.18x = 18,931,144.55
  5. Step 5: Solve for x
    x = 18,931,144.55/4,220.18
  6. Step 6: Final answer
    x = 4,485.86

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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.