Home / 3,780.48-5,670.72-1,439.92

Finding the Fourth Proportional to 3,780.48, 5,670.72 and 1,439.92

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Solution

The fourth proportional to 3,780.48, 5,670.72 and 1,439.92 is: 2,159.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.48 : 5,670.72 = 1,439.92 : x
  2. Step 2: Convert to fraction form
    3,780.48/5,670.72 = 1,439.92/x
  3. Step 3: Cross multiply
    3,780.48x = 5,670.72 × 1,439.92
  4. Step 4: Simplify right side
    3,780.48x = 8,165,383.14
  5. Step 5: Solve for x
    x = 8,165,383.14/3,780.48
  6. Step 6: Final answer
    x = 2,159.88

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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.