Home / 11,315.45-16,966.98-3,919.28

Finding the Fourth Proportional to 11,315.45, 16,966.98 and 3,919.28

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Solution

The fourth proportional to 11,315.45, 16,966.98 and 3,919.28 is: 5,876.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.45 : 16,966.98 = 3,919.28 : x
  2. Step 2: Convert to fraction form
    11,315.45/16,966.98 = 3,919.28/x
  3. Step 3: Cross multiply
    11,315.45x = 16,966.98 × 3,919.28
  4. Step 4: Simplify right side
    11,315.45x = 66,498,345.37
  5. Step 5: Solve for x
    x = 66,498,345.37/11,315.45
  6. Step 6: Final answer
    x = 5,876.77

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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.