Home / 7,019.92-9,687.68-3,876.20

Finding the Fourth Proportional to 7,019.92, 9,687.68 and 3,876.20

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Solution

The fourth proportional to 7,019.92, 9,687.68 and 3,876.20 is: 5,349.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,019.92 : 9,687.68 = 3,876.20 : x
  2. Step 2: Convert to fraction form
    7,019.92/9,687.68 = 3,876.20/x
  3. Step 3: Cross multiply
    7,019.92x = 9,687.68 × 3,876.20
  4. Step 4: Simplify right side
    7,019.92x = 37,551,385.22
  5. Step 5: Solve for x
    x = 37,551,385.22/7,019.92
  6. Step 6: Final answer
    x = 5,349.26

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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.