Home / 7,747.40-11,618.78-2,201.20

Finding the Fourth Proportional to 7,747.40, 11,618.78 and 2,201.20

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Solution

The fourth proportional to 7,747.40, 11,618.78 and 2,201.20 is: 3,301.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,747.40 : 11,618.78 = 2,201.20 : x
  2. Step 2: Convert to fraction form
    7,747.40/11,618.78 = 2,201.20/x
  3. Step 3: Cross multiply
    7,747.40x = 11,618.78 × 2,201.20
  4. Step 4: Simplify right side
    7,747.40x = 25,575,218.48
  5. Step 5: Solve for x
    x = 25,575,218.48/7,747.40
  6. Step 6: Final answer
    x = 3,301.13

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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.