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Finding the Fourth Proportional to 6,370.88, 8,791.68 and 3,718.24

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Solution

The fourth proportional to 6,370.88, 8,791.68 and 3,718.24 is: 5,131.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,370.88 : 8,791.68 = 3,718.24 : x
  2. Step 2: Convert to fraction form
    6,370.88/8,791.68 = 3,718.24/x
  3. Step 3: Cross multiply
    6,370.88x = 8,791.68 × 3,718.24
  4. Step 4: Simplify right side
    6,370.88x = 32,689,576.24
  5. Step 5: Solve for x
    x = 32,689,576.24/6,370.88
  6. Step 6: Final answer
    x = 5,131.09

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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.