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Finding the Fourth Proportional to 4,306.40, 6,469.20 and 4,143.20

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Solution

The fourth proportional to 4,306.40, 6,469.20 and 4,143.20 is: 6,224.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,306.40 : 6,469.20 = 4,143.20 : x
  2. Step 2: Convert to fraction form
    4,306.40/6,469.20 = 4,143.20/x
  3. Step 3: Cross multiply
    4,306.40x = 6,469.20 × 4,143.20
  4. Step 4: Simplify right side
    4,306.40x = 26,803,189.44
  5. Step 5: Solve for x
    x = 26,803,189.44/4,306.40
  6. Step 6: Final answer
    x = 6,224.04

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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.