Home / 10,479.21-15,715.49-3,457.92

Finding the Fourth Proportional to 10,479.21, 15,715.49 and 3,457.92

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Solution

The fourth proportional to 10,479.21, 15,715.49 and 3,457.92 is: 5,185.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.21 : 15,715.49 = 3,457.92 : x
  2. Step 2: Convert to fraction form
    10,479.21/15,715.49 = 3,457.92/x
  3. Step 3: Cross multiply
    10,479.21x = 15,715.49 × 3,457.92
  4. Step 4: Simplify right side
    10,479.21x = 54,342,865.95
  5. Step 5: Solve for x
    x = 54,342,865.95/10,479.21
  6. Step 6: Final answer
    x = 5,185.78

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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.