Home / 5,121.92-7,678.56-2,042.24

Finding the Fourth Proportional to 5,121.92, 7,678.56 and 2,042.24

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Solution

The fourth proportional to 5,121.92, 7,678.56 and 2,042.24 is: 3,061.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.92 : 7,678.56 = 2,042.24 : x
  2. Step 2: Convert to fraction form
    5,121.92/7,678.56 = 2,042.24/x
  3. Step 3: Cross multiply
    5,121.92x = 7,678.56 × 2,042.24
  4. Step 4: Simplify right side
    5,121.92x = 15,681,462.37
  5. Step 5: Solve for x
    x = 15,681,462.37/5,121.92
  6. Step 6: Final answer
    x = 3,061.64

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1.5x scale

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.