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Finding the Fourth Proportional to 3,935.02, 5,902.47 and 1,339.78

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Solution

The fourth proportional to 3,935.02, 5,902.47 and 1,339.78 is: 2,009.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.02 : 5,902.47 = 1,339.78 : x
  2. Step 2: Convert to fraction form
    3,935.02/5,902.47 = 1,339.78/x
  3. Step 3: Cross multiply
    3,935.02x = 5,902.47 × 1,339.78
  4. Step 4: Simplify right side
    3,935.02x = 7,908,011.26
  5. Step 5: Solve for x
    x = 7,908,011.26/3,935.02
  6. Step 6: Final answer
    x = 2,009.65

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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.