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Finding the Fourth Proportional to 3,972.58, 5,958.15 and 1,339.72

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Solution

The fourth proportional to 3,972.58, 5,958.15 and 1,339.72 is: 2,009.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.58 : 5,958.15 = 1,339.72 : x
  2. Step 2: Convert to fraction form
    3,972.58/5,958.15 = 1,339.72/x
  3. Step 3: Cross multiply
    3,972.58x = 5,958.15 × 1,339.72
  4. Step 4: Simplify right side
    3,972.58x = 7,982,252.72
  5. Step 5: Solve for x
    x = 7,982,252.72/3,972.58
  6. Step 6: Final answer
    x = 2,009.34

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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.