Home / 7,686.28-11,531.04-2,491.75

Finding the Fourth Proportional to 7,686.28, 11,531.04 and 2,491.75

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Solution

The fourth proportional to 7,686.28, 11,531.04 and 2,491.75 is: 3,738.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,686.28 : 11,531.04 = 2,491.75 : x
  2. Step 2: Convert to fraction form
    7,686.28/11,531.04 = 2,491.75/x
  3. Step 3: Cross multiply
    7,686.28x = 11,531.04 × 2,491.75
  4. Step 4: Simplify right side
    7,686.28x = 28,732,468.92
  5. Step 5: Solve for x
    x = 28,732,468.92/7,686.28
  6. Step 6: Final answer
    x = 3,738.15

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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.