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Finding the Fourth Proportional to 6,540.48, 8,905.11 and 6,519.72

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Solution

The fourth proportional to 6,540.48, 8,905.11 and 6,519.72 is: 8,876.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,540.48 : 8,905.11 = 6,519.72 : x
  2. Step 2: Convert to fraction form
    6,540.48/8,905.11 = 6,519.72/x
  3. Step 3: Cross multiply
    6,540.48x = 8,905.11 × 6,519.72
  4. Step 4: Simplify right side
    6,540.48x = 58,058,746.65
  5. Step 5: Solve for x
    x = 58,058,746.65/6,540.48
  6. Step 6: Final answer
    x = 8,876.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.