Home / 6,431.16-8,876.13-3,778.56

Finding the Fourth Proportional to 6,431.16, 8,876.13 and 3,778.56

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Solution

The fourth proportional to 6,431.16, 8,876.13 and 3,778.56 is: 5,215.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.16 : 8,876.13 = 3,778.56 : x
  2. Step 2: Convert to fraction form
    6,431.16/8,876.13 = 3,778.56/x
  3. Step 3: Cross multiply
    6,431.16x = 8,876.13 × 3,778.56
  4. Step 4: Simplify right side
    6,431.16x = 33,539,037.23
  5. Step 5: Solve for x
    x = 33,539,037.23/6,431.16
  6. Step 6: Final answer
    x = 5,215.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.