Home / 7,618.20-11,429.02-2,687.89

Finding the Fourth Proportional to 7,618.20, 11,429.02 and 2,687.89

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Solution

The fourth proportional to 7,618.20, 11,429.02 and 2,687.89 is: 4,032.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,618.20 : 11,429.02 = 2,687.89 : x
  2. Step 2: Convert to fraction form
    7,618.20/11,429.02 = 2,687.89/x
  3. Step 3: Cross multiply
    7,618.20x = 11,429.02 × 2,687.89
  4. Step 4: Simplify right side
    7,618.20x = 30,719,948.57
  5. Step 5: Solve for x
    x = 30,719,948.57/7,618.20
  6. Step 6: Final answer
    x = 4,032.44

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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.