Home / 7,618.19-11,426.59-2,687.57

Finding the Fourth Proportional to 7,618.19, 11,426.59 and 2,687.57

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Solution

The fourth proportional to 7,618.19, 11,426.59 and 2,687.57 is: 4,031.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,618.19 : 11,426.59 = 2,687.57 : x
  2. Step 2: Convert to fraction form
    7,618.19/11,426.59 = 2,687.57/x
  3. Step 3: Cross multiply
    7,618.19x = 11,426.59 × 2,687.57
  4. Step 4: Simplify right side
    7,618.19x = 30,709,760.49
  5. Step 5: Solve for x
    x = 30,709,760.49/7,618.19
  6. Step 6: Final answer
    x = 4,031.11

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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.