Home / 10,878.10-16,319.19-3,480.57

Finding the Fourth Proportional to 10,878.10, 16,319.19 and 3,480.57

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Solution

The fourth proportional to 10,878.10, 16,319.19 and 3,480.57 is: 5,221.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.10 : 16,319.19 = 3,480.57 : x
  2. Step 2: Convert to fraction form
    10,878.10/16,319.19 = 3,480.57/x
  3. Step 3: Cross multiply
    10,878.10x = 16,319.19 × 3,480.57
  4. Step 4: Simplify right side
    10,878.10x = 56,800,083.14
  5. Step 5: Solve for x
    x = 56,800,083.14/10,878.10
  6. Step 6: Final answer
    x = 5,221.51

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1.5x scale

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.