Home / 7,612.20-11,392.36-6,381

Finding the Fourth Proportional to 7,612.20, 11,392.36 and 6,381

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Solution

The fourth proportional to 7,612.20, 11,392.36 and 6,381 is: 9,549.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,612.20 : 11,392.36 = 6,381 : x
  2. Step 2: Convert to fraction form
    7,612.20/11,392.36 = 6,381/x
  3. Step 3: Cross multiply
    7,612.20x = 11,392.36 × 6,381
  4. Step 4: Simplify right side
    7,612.20x = 72,694,649.16
  5. Step 5: Solve for x
    x = 72,694,649.16/7,612.20
  6. Step 6: Final answer
    x = 9,549.76

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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.