Home / 3,939.74-5,434.43-2,345.32

Finding the Fourth Proportional to 3,939.74, 5,434.43 and 2,345.32

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Solution

The fourth proportional to 3,939.74, 5,434.43 and 2,345.32 is: 3,235.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.74 : 5,434.43 = 2,345.32 : x
  2. Step 2: Convert to fraction form
    3,939.74/5,434.43 = 2,345.32/x
  3. Step 3: Cross multiply
    3,939.74x = 5,434.43 × 2,345.32
  4. Step 4: Simplify right side
    3,939.74x = 12,745,477.37
  5. Step 5: Solve for x
    x = 12,745,477.37/3,939.74
  6. Step 6: Final answer
    x = 3,235.11

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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.