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Finding the Fourth Proportional to 3,078.62, 4,248.21 and 1,751.97

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Solution

The fourth proportional to 3,078.62, 4,248.21 and 1,751.97 is: 2,417.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.62 : 4,248.21 = 1,751.97 : x
  2. Step 2: Convert to fraction form
    3,078.62/4,248.21 = 1,751.97/x
  3. Step 3: Cross multiply
    3,078.62x = 4,248.21 × 1,751.97
  4. Step 4: Simplify right side
    3,078.62x = 7,442,758.97
  5. Step 5: Solve for x
    x = 7,442,758.97/3,078.62
  6. Step 6: Final answer
    x = 2,417.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.