Home / 7,140.89-9,854.62-3,997.08

Finding the Fourth Proportional to 7,140.89, 9,854.62 and 3,997.08

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Solution

The fourth proportional to 7,140.89, 9,854.62 and 3,997.08 is: 5,516.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.89 : 9,854.62 = 3,997.08 : x
  2. Step 2: Convert to fraction form
    7,140.89/9,854.62 = 3,997.08/x
  3. Step 3: Cross multiply
    7,140.89x = 9,854.62 × 3,997.08
  4. Step 4: Simplify right side
    7,140.89x = 39,389,694.52
  5. Step 5: Solve for x
    x = 39,389,694.52/7,140.89
  6. Step 6: Final answer
    x = 5,516.07

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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.