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Finding the Fourth Proportional to 3,691.66, 5,535.69 and 1,225.63

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Solution

The fourth proportional to 3,691.66, 5,535.69 and 1,225.63 is: 1,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.66 : 5,535.69 = 1,225.63 : x
  2. Step 2: Convert to fraction form
    3,691.66/5,535.69 = 1,225.63/x
  3. Step 3: Cross multiply
    3,691.66x = 5,535.69 × 1,225.63
  4. Step 4: Simplify right side
    3,691.66x = 6,784,707.73
  5. Step 5: Solve for x
    x = 6,784,707.73/3,691.66
  6. Step 6: Final answer
    x = 1,837.85

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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.