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Finding the Fourth Proportional to 8,568.71, 12,838.99 and 5,274.84

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Solution

The fourth proportional to 8,568.71, 12,838.99 and 5,274.84 is: 7,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,568.71 : 12,838.99 = 5,274.84 : x
  2. Step 2: Convert to fraction form
    8,568.71/12,838.99 = 5,274.84/x
  3. Step 3: Cross multiply
    8,568.71x = 12,838.99 × 5,274.84
  4. Step 4: Simplify right side
    8,568.71x = 67,723,618.01
  5. Step 5: Solve for x
    x = 67,723,618.01/8,568.71
  6. Step 6: Final answer
    x = 7,903.60

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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.