Home / 11,315.52-16,969.08-3,918

Finding the Fourth Proportional to 11,315.52, 16,969.08 and 3,918

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Solution

The fourth proportional to 11,315.52, 16,969.08 and 3,918 is: 5,875.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.52 : 16,969.08 = 3,918 : x
  2. Step 2: Convert to fraction form
    11,315.52/16,969.08 = 3,918/x
  3. Step 3: Cross multiply
    11,315.52x = 16,969.08 × 3,918
  4. Step 4: Simplify right side
    11,315.52x = 66,484,855.44
  5. Step 5: Solve for x
    x = 66,484,855.44/11,315.52
  6. Step 6: Final answer
    x = 5,875.55

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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.