Home / 3,138.65-4,698.78-1,654.37

Finding the Fourth Proportional to 3,138.65, 4,698.78 and 1,654.37

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Solution

The fourth proportional to 3,138.65, 4,698.78 and 1,654.37 is: 2,476.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.65 : 4,698.78 = 1,654.37 : x
  2. Step 2: Convert to fraction form
    3,138.65/4,698.78 = 1,654.37/x
  3. Step 3: Cross multiply
    3,138.65x = 4,698.78 × 1,654.37
  4. Step 4: Simplify right side
    3,138.65x = 7,773,535.02
  5. Step 5: Solve for x
    x = 7,773,535.02/3,138.65
  6. Step 6: Final answer
    x = 2,476.71

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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.