Home / 6,343.79-9,515.75-1,961.28

Finding the Fourth Proportional to 6,343.79, 9,515.75 and 1,961.28

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Solution

The fourth proportional to 6,343.79, 9,515.75 and 1,961.28 is: 2,941.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,343.79 : 9,515.75 = 1,961.28 : x
  2. Step 2: Convert to fraction form
    6,343.79/9,515.75 = 1,961.28/x
  3. Step 3: Cross multiply
    6,343.79x = 9,515.75 × 1,961.28
  4. Step 4: Simplify right side
    6,343.79x = 18,663,040.35
  5. Step 5: Solve for x
    x = 18,663,040.35/6,343.79
  6. Step 6: Final answer
    x = 2,941.94

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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.