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Finding the Fourth Proportional to 6,601.49, 9,106.75 and 3,948.20

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Solution

The fourth proportional to 6,601.49, 9,106.75 and 3,948.20 is: 5,446.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,601.49 : 9,106.75 = 3,948.20 : x
  2. Step 2: Convert to fraction form
    6,601.49/9,106.75 = 3,948.20/x
  3. Step 3: Cross multiply
    6,601.49x = 9,106.75 × 3,948.20
  4. Step 4: Simplify right side
    6,601.49x = 35,955,270.35
  5. Step 5: Solve for x
    x = 35,955,270.35/6,601.49
  6. Step 6: Final answer
    x = 5,446.54

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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.