Home / 3,840.78-5,299.10-2,347.11

Finding the Fourth Proportional to 3,840.78, 5,299.10 and 2,347.11

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Solution

The fourth proportional to 3,840.78, 5,299.10 and 2,347.11 is: 3,238.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.78 : 5,299.10 = 2,347.11 : x
  2. Step 2: Convert to fraction form
    3,840.78/5,299.10 = 2,347.11/x
  3. Step 3: Cross multiply
    3,840.78x = 5,299.10 × 2,347.11
  4. Step 4: Simplify right side
    3,840.78x = 12,437,558.87
  5. Step 5: Solve for x
    x = 12,437,558.87/3,840.78
  6. Step 6: Final answer
    x = 3,238.29

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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.