Home / 7,776.90-11,661.55-2,581.02

Finding the Fourth Proportional to 7,776.90, 11,661.55 and 2,581.02

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Solution

The fourth proportional to 7,776.90, 11,661.55 and 2,581.02 is: 3,870.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.90 : 11,661.55 = 2,581.02 : x
  2. Step 2: Convert to fraction form
    7,776.90/11,661.55 = 2,581.02/x
  3. Step 3: Cross multiply
    7,776.90x = 11,661.55 × 2,581.02
  4. Step 4: Simplify right side
    7,776.90x = 30,098,693.78
  5. Step 5: Solve for x
    x = 30,098,693.78/7,776.90
  6. Step 6: Final answer
    x = 3,870.27

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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.