Home / 11,387.17-17,083.28-3,490.78

Finding the Fourth Proportional to 11,387.17, 17,083.28 and 3,490.78

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Solution

The fourth proportional to 11,387.17, 17,083.28 and 3,490.78 is: 5,236.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.17 : 17,083.28 = 3,490.78 : x
  2. Step 2: Convert to fraction form
    11,387.17/17,083.28 = 3,490.78/x
  3. Step 3: Cross multiply
    11,387.17x = 17,083.28 × 3,490.78
  4. Step 4: Simplify right side
    11,387.17x = 59,633,869.29
  5. Step 5: Solve for x
    x = 59,633,869.29/11,387.17
  6. Step 6: Final answer
    x = 5,236.94

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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.