Home / 3,899.40-5,381.82-2,328.36

Finding the Fourth Proportional to 3,899.40, 5,381.82 and 2,328.36

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Solution

The fourth proportional to 3,899.40, 5,381.82 and 2,328.36 is: 3,213.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.40 : 5,381.82 = 2,328.36 : x
  2. Step 2: Convert to fraction form
    3,899.40/5,381.82 = 2,328.36/x
  3. Step 3: Cross multiply
    3,899.40x = 5,381.82 × 2,328.36
  4. Step 4: Simplify right side
    3,899.40x = 12,530,814.42
  5. Step 5: Solve for x
    x = 12,530,814.42/3,899.40
  6. Step 6: Final answer
    x = 3,213.52

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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.