Home / 5,117.94-7,678.44-1,998.54

Finding the Fourth Proportional to 5,117.94, 7,678.44 and 1,998.54

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Solution

The fourth proportional to 5,117.94, 7,678.44 and 1,998.54 is: 2,998.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.94 : 7,678.44 = 1,998.54 : x
  2. Step 2: Convert to fraction form
    5,117.94/7,678.44 = 1,998.54/x
  3. Step 3: Cross multiply
    5,117.94x = 7,678.44 × 1,998.54
  4. Step 4: Simplify right side
    5,117.94x = 15,345,669.48
  5. Step 5: Solve for x
    x = 15,345,669.48/5,117.94
  6. Step 6: Final answer
    x = 2,998.41

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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.