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Finding the Fourth Proportional to 6,613.98, 9,126.65 and 3,961.34

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Solution

The fourth proportional to 6,613.98, 9,126.65 and 3,961.34 is: 5,466.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.98 : 9,126.65 = 3,961.34 : x
  2. Step 2: Convert to fraction form
    6,613.98/9,126.65 = 3,961.34/x
  3. Step 3: Cross multiply
    6,613.98x = 9,126.65 × 3,961.34
  4. Step 4: Simplify right side
    6,613.98x = 36,153,698.27
  5. Step 5: Solve for x
    x = 36,153,698.27/6,613.98
  6. Step 6: Final answer
    x = 5,466.25

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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.