Home / 3,840.01-5,299.70-2,161.49

Finding the Fourth Proportional to 3,840.01, 5,299.70 and 2,161.49

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Solution

The fourth proportional to 3,840.01, 5,299.70 and 2,161.49 is: 2,983.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.01 : 5,299.70 = 2,161.49 : x
  2. Step 2: Convert to fraction form
    3,840.01/5,299.70 = 2,161.49/x
  3. Step 3: Cross multiply
    3,840.01x = 5,299.70 × 2,161.49
  4. Step 4: Simplify right side
    3,840.01x = 11,455,211.25
  5. Step 5: Solve for x
    x = 11,455,211.25/3,840.01
  6. Step 6: Final answer
    x = 2,983.12

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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.