Home / 3,905.20-5,856.18-1,306.72

Finding the Fourth Proportional to 3,905.20, 5,856.18 and 1,306.72

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Solution

The fourth proportional to 3,905.20, 5,856.18 and 1,306.72 is: 1,959.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.20 : 5,856.18 = 1,306.72 : x
  2. Step 2: Convert to fraction form
    3,905.20/5,856.18 = 1,306.72/x
  3. Step 3: Cross multiply
    3,905.20x = 5,856.18 × 1,306.72
  4. Step 4: Simplify right side
    3,905.20x = 7,652,387.53
  5. Step 5: Solve for x
    x = 7,652,387.53/3,905.20
  6. Step 6: Final answer
    x = 1,959.54

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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.