Home / 6,931.78-10,396.39-2,000.20

Finding the Fourth Proportional to 6,931.78, 10,396.39 and 2,000.20

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Solution

The fourth proportional to 6,931.78, 10,396.39 and 2,000.20 is: 2,999.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,931.78 : 10,396.39 = 2,000.20 : x
  2. Step 2: Convert to fraction form
    6,931.78/10,396.39 = 2,000.20/x
  3. Step 3: Cross multiply
    6,931.78x = 10,396.39 × 2,000.20
  4. Step 4: Simplify right side
    6,931.78x = 20,794,859.28
  5. Step 5: Solve for x
    x = 20,794,859.28/6,931.78
  6. Step 6: Final answer
    x = 2,999.93

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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.