Home / 3,942.96-5,915.34-1,345.88

Finding the Fourth Proportional to 3,942.96, 5,915.34 and 1,345.88

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Solution

The fourth proportional to 3,942.96, 5,915.34 and 1,345.88 is: 2,019.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.96 : 5,915.34 = 1,345.88 : x
  2. Step 2: Convert to fraction form
    3,942.96/5,915.34 = 1,345.88/x
  3. Step 3: Cross multiply
    3,942.96x = 5,915.34 × 1,345.88
  4. Step 4: Simplify right side
    3,942.96x = 7,961,337.80
  5. Step 5: Solve for x
    x = 7,961,337.80/3,942.96
  6. Step 6: Final answer
    x = 2,019.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.