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Finding the Fourth Proportional to 7,071.66, 9,759.19 and 3,927.84

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Solution

The fourth proportional to 7,071.66, 9,759.19 and 3,927.84 is: 5,420.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,071.66 : 9,759.19 = 3,927.84 : x
  2. Step 2: Convert to fraction form
    7,071.66/9,759.19 = 3,927.84/x
  3. Step 3: Cross multiply
    7,071.66x = 9,759.19 × 3,927.84
  4. Step 4: Simplify right side
    7,071.66x = 38,332,570.99
  5. Step 5: Solve for x
    x = 38,332,570.99/7,071.66
  6. Step 6: Final answer
    x = 5,420.59

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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.