Home / 7,720.09-11,580.13-2,789.62

Finding the Fourth Proportional to 7,720.09, 11,580.13 and 2,789.62

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Solution

The fourth proportional to 7,720.09, 11,580.13 and 2,789.62 is: 4,184.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.09 : 11,580.13 = 2,789.62 : x
  2. Step 2: Convert to fraction form
    7,720.09/11,580.13 = 2,789.62/x
  3. Step 3: Cross multiply
    7,720.09x = 11,580.13 × 2,789.62
  4. Step 4: Simplify right side
    7,720.09x = 32,304,126.33
  5. Step 5: Solve for x
    x = 32,304,126.33/7,720.09
  6. Step 6: Final answer
    x = 4,184.42

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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.