Home / 3,840.65-5,299.41-2,162.13

Finding the Fourth Proportional to 3,840.65, 5,299.41 and 2,162.13

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Solution

The fourth proportional to 3,840.65, 5,299.41 and 2,162.13 is: 2,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.65 : 5,299.41 = 2,162.13 : x
  2. Step 2: Convert to fraction form
    3,840.65/5,299.41 = 2,162.13/x
  3. Step 3: Cross multiply
    3,840.65x = 5,299.41 × 2,162.13
  4. Step 4: Simplify right side
    3,840.65x = 11,458,013.34
  5. Step 5: Solve for x
    x = 11,458,013.34/3,840.65
  6. Step 6: Final answer
    x = 2,983.35

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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.