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Finding the Fourth Proportional to 7,133.81, 10,691.12 and 2,968.99

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Solution

The fourth proportional to 7,133.81, 10,691.12 and 2,968.99 is: 4,449.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,133.81 : 10,691.12 = 2,968.99 : x
  2. Step 2: Convert to fraction form
    7,133.81/10,691.12 = 2,968.99/x
  3. Step 3: Cross multiply
    7,133.81x = 10,691.12 × 2,968.99
  4. Step 4: Simplify right side
    7,133.81x = 31,741,809.06
  5. Step 5: Solve for x
    x = 31,741,809.06/7,133.81
  6. Step 6: Final answer
    x = 4,449.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.