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Finding the Fourth Proportional to 6,388.67, 8,819.46 and 4,265.45

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Solution

The fourth proportional to 6,388.67, 8,819.46 and 4,265.45 is: 5,888.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.67 : 8,819.46 = 4,265.45 : x
  2. Step 2: Convert to fraction form
    6,388.67/8,819.46 = 4,265.45/x
  3. Step 3: Cross multiply
    6,388.67x = 8,819.46 × 4,265.45
  4. Step 4: Simplify right side
    6,388.67x = 37,618,965.66
  5. Step 5: Solve for x
    x = 37,618,965.66/6,388.67
  6. Step 6: Final answer
    x = 5,888.39

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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.