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Finding the Fourth Proportional to 7,019.26, 9,686.73 and 3,875.65

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Solution

The fourth proportional to 7,019.26, 9,686.73 and 3,875.65 is: 5,348.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,019.26 : 9,686.73 = 3,875.65 : x
  2. Step 2: Convert to fraction form
    7,019.26/9,686.73 = 3,875.65/x
  3. Step 3: Cross multiply
    7,019.26x = 9,686.73 × 3,875.65
  4. Step 4: Simplify right side
    7,019.26x = 37,542,375.12
  5. Step 5: Solve for x
    x = 37,542,375.12/7,019.26
  6. Step 6: Final answer
    x = 5,348.48

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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.