Home / 11,315.31-16,966.80-3,919.16

Finding the Fourth Proportional to 11,315.31, 16,966.80 and 3,919.16

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Solution

The fourth proportional to 11,315.31, 16,966.80 and 3,919.16 is: 5,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.31 : 16,966.80 = 3,919.16 : x
  2. Step 2: Convert to fraction form
    11,315.31/16,966.80 = 3,919.16/x
  3. Step 3: Cross multiply
    11,315.31x = 16,966.80 × 3,919.16
  4. Step 4: Simplify right side
    11,315.31x = 66,495,519.05
  5. Step 5: Solve for x
    x = 66,495,519.05/11,315.31
  6. Step 6: Final answer
    x = 5,876.60

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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.