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Finding the Fourth Proportional to 7,194.91, 9,928.76 and 4,008.21

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Solution

The fourth proportional to 7,194.91, 9,928.76 and 4,008.21 is: 5,531.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,194.91 : 9,928.76 = 4,008.21 : x
  2. Step 2: Convert to fraction form
    7,194.91/9,928.76 = 4,008.21/x
  3. Step 3: Cross multiply
    7,194.91x = 9,928.76 × 4,008.21
  4. Step 4: Simplify right side
    7,194.91x = 39,796,565.23
  5. Step 5: Solve for x
    x = 39,796,565.23/7,194.91
  6. Step 6: Final answer
    x = 5,531.21

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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.