Home / 4,223.20-6,331.20-2,986.72

Finding the Fourth Proportional to 4,223.20, 6,331.20 and 2,986.72

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Solution

The fourth proportional to 4,223.20, 6,331.20 and 2,986.72 is: 4,477.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,223.20 : 6,331.20 = 2,986.72 : x
  2. Step 2: Convert to fraction form
    4,223.20/6,331.20 = 2,986.72/x
  3. Step 3: Cross multiply
    4,223.20x = 6,331.20 × 2,986.72
  4. Step 4: Simplify right side
    4,223.20x = 18,909,521.66
  5. Step 5: Solve for x
    x = 18,909,521.66/4,223.20
  6. Step 6: Final answer
    x = 4,477.53

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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.