Home / 3,840.23-5,299.45-2,161.64

Finding the Fourth Proportional to 3,840.23, 5,299.45 and 2,161.64

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Solution

The fourth proportional to 3,840.23, 5,299.45 and 2,161.64 is: 2,983.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.23 : 5,299.45 = 2,161.64 : x
  2. Step 2: Convert to fraction form
    3,840.23/5,299.45 = 2,161.64/x
  3. Step 3: Cross multiply
    3,840.23x = 5,299.45 × 2,161.64
  4. Step 4: Simplify right side
    3,840.23x = 11,455,503.10
  5. Step 5: Solve for x
    x = 11,455,503.10/3,840.23
  6. Step 6: Final answer
    x = 2,983.03

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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.