Home / 5,174.44-7,140.90-3,078.28

Finding the Fourth Proportional to 5,174.44, 7,140.90 and 3,078.28

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Solution

The fourth proportional to 5,174.44, 7,140.90 and 3,078.28 is: 4,248.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.44 : 7,140.90 = 3,078.28 : x
  2. Step 2: Convert to fraction form
    5,174.44/7,140.90 = 3,078.28/x
  3. Step 3: Cross multiply
    5,174.44x = 7,140.90 × 3,078.28
  4. Step 4: Simplify right side
    5,174.44x = 21,981,689.65
  5. Step 5: Solve for x
    x = 21,981,689.65/5,174.44
  6. Step 6: Final answer
    x = 4,248.13

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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.