Home / 7,515.78-11,276.26-3,358.66

Finding the Fourth Proportional to 7,515.78, 11,276.26 and 3,358.66

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Solution

The fourth proportional to 7,515.78, 11,276.26 and 3,358.66 is: 5,039.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,515.78 : 11,276.26 = 3,358.66 : x
  2. Step 2: Convert to fraction form
    7,515.78/11,276.26 = 3,358.66/x
  3. Step 3: Cross multiply
    7,515.78x = 11,276.26 × 3,358.66
  4. Step 4: Simplify right side
    7,515.78x = 37,873,123.41
  5. Step 5: Solve for x
    x = 37,873,123.41/7,515.78
  6. Step 6: Final answer
    x = 5,039.15

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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.