Home / 3,942.30-5,440.80-2,349.30

Finding the Fourth Proportional to 3,942.30, 5,440.80 and 2,349.30

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Solution

The fourth proportional to 3,942.30, 5,440.80 and 2,349.30 is: 3,242.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.30 : 5,440.80 = 2,349.30 : x
  2. Step 2: Convert to fraction form
    3,942.30/5,440.80 = 2,349.30/x
  3. Step 3: Cross multiply
    3,942.30x = 5,440.80 × 2,349.30
  4. Step 4: Simplify right side
    3,942.30x = 12,782,071.44
  5. Step 5: Solve for x
    x = 12,782,071.44/3,942.30
  6. Step 6: Final answer
    x = 3,242.29

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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.