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Finding the Fourth Proportional to 6,404.80, 8,837.11 and 3,886.85

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Solution

The fourth proportional to 6,404.80, 8,837.11 and 3,886.85 is: 5,362.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,404.80 : 8,837.11 = 3,886.85 : x
  2. Step 2: Convert to fraction form
    6,404.80/8,837.11 = 3,886.85/x
  3. Step 3: Cross multiply
    6,404.80x = 8,837.11 × 3,886.85
  4. Step 4: Simplify right side
    6,404.80x = 34,348,476.82
  5. Step 5: Solve for x
    x = 34,348,476.82/6,404.80
  6. Step 6: Final answer
    x = 5,362.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.