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Finding the Fourth Proportional to 6,392.80, 9,579.45 and 4,305.10

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Solution

The fourth proportional to 6,392.80, 9,579.45 and 4,305.10 is: 6,451.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,392.80 : 9,579.45 = 4,305.10 : x
  2. Step 2: Convert to fraction form
    6,392.80/9,579.45 = 4,305.10/x
  3. Step 3: Cross multiply
    6,392.80x = 9,579.45 × 4,305.10
  4. Step 4: Simplify right side
    6,392.80x = 41,240,490.20
  5. Step 5: Solve for x
    x = 41,240,490.20/6,392.80
  6. Step 6: Final answer
    x = 6,451.08

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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.