Home / 7,387.69-11,078.98-2,121.27

Finding the Fourth Proportional to 7,387.69, 11,078.98 and 2,121.27

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Solution

The fourth proportional to 7,387.69, 11,078.98 and 2,121.27 is: 3,181.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,387.69 : 11,078.98 = 2,121.27 : x
  2. Step 2: Convert to fraction form
    7,387.69/11,078.98 = 2,121.27/x
  3. Step 3: Cross multiply
    7,387.69x = 11,078.98 × 2,121.27
  4. Step 4: Simplify right side
    7,387.69x = 23,501,507.90
  5. Step 5: Solve for x
    x = 23,501,507.90/7,387.69
  6. Step 6: Final answer
    x = 3,181.17

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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.