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Finding the Fourth Proportional to 6,635.70, 9,953.46 and 3,860.90

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Solution

The fourth proportional to 6,635.70, 9,953.46 and 3,860.90 is: 5,791.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,635.70 : 9,953.46 = 3,860.90 : x
  2. Step 2: Convert to fraction form
    6,635.70/9,953.46 = 3,860.90/x
  3. Step 3: Cross multiply
    6,635.70x = 9,953.46 × 3,860.90
  4. Step 4: Simplify right side
    6,635.70x = 38,429,263.95
  5. Step 5: Solve for x
    x = 38,429,263.95/6,635.70
  6. Step 6: Final answer
    x = 5,791.29

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1.5x scale

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.