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Finding the Fourth Proportional to 6,393.80, 9,612.30 and 5,443.40

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Solution

The fourth proportional to 6,393.80, 9,612.30 and 5,443.40 is: 8,183.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,393.80 : 9,612.30 = 5,443.40 : x
  2. Step 2: Convert to fraction form
    6,393.80/9,612.30 = 5,443.40/x
  3. Step 3: Cross multiply
    6,393.80x = 9,612.30 × 5,443.40
  4. Step 4: Simplify right side
    6,393.80x = 52,323,593.82
  5. Step 5: Solve for x
    x = 52,323,593.82/6,393.80
  6. Step 6: Final answer
    x = 8,183.49

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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.