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Finding the Fourth Proportional to 6,967.68, 9,614.88 and 3,983.40

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Solution

The fourth proportional to 6,967.68, 9,614.88 and 3,983.40 is: 5,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,967.68 : 9,614.88 = 3,983.40 : x
  2. Step 2: Convert to fraction form
    6,967.68/9,614.88 = 3,983.40/x
  3. Step 3: Cross multiply
    6,967.68x = 9,614.88 × 3,983.40
  4. Step 4: Simplify right side
    6,967.68x = 38,299,912.99
  5. Step 5: Solve for x
    x = 38,299,912.99/6,967.68
  6. Step 6: Final answer
    x = 5,496.80

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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.