Home / 3,840.31-5,299.32-2,511.91

Finding the Fourth Proportional to 3,840.31, 5,299.32 and 2,511.91

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Solution

The fourth proportional to 3,840.31, 5,299.32 and 2,511.91 is: 3,466.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.31 : 5,299.32 = 2,511.91 : x
  2. Step 2: Convert to fraction form
    3,840.31/5,299.32 = 2,511.91/x
  3. Step 3: Cross multiply
    3,840.31x = 5,299.32 × 2,511.91
  4. Step 4: Simplify right side
    3,840.31x = 13,311,414.90
  5. Step 5: Solve for x
    x = 13,311,414.90/3,840.31
  6. Step 6: Final answer
    x = 3,466.23

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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.