Home / 7,718.60-11,577.90-2,789.75

Finding the Fourth Proportional to 7,718.60, 11,577.90 and 2,789.75

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Solution

The fourth proportional to 7,718.60, 11,577.90 and 2,789.75 is: 4,184.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.60 : 11,577.90 = 2,789.75 : x
  2. Step 2: Convert to fraction form
    7,718.60/11,577.90 = 2,789.75/x
  3. Step 3: Cross multiply
    7,718.60x = 11,577.90 × 2,789.75
  4. Step 4: Simplify right side
    7,718.60x = 32,299,446.53
  5. Step 5: Solve for x
    x = 32,299,446.53/7,718.60
  6. Step 6: Final answer
    x = 4,184.63

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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.