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Finding the Fourth Proportional to 5,229.71, 7,216.78 and 2,839.59

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Solution

The fourth proportional to 5,229.71, 7,216.78 and 2,839.59 is: 3,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,229.71 : 7,216.78 = 2,839.59 : x
  2. Step 2: Convert to fraction form
    5,229.71/7,216.78 = 2,839.59/x
  3. Step 3: Cross multiply
    5,229.71x = 7,216.78 × 2,839.59
  4. Step 4: Simplify right side
    5,229.71x = 20,492,672.81
  5. Step 5: Solve for x
    x = 20,492,672.81/5,229.71
  6. Step 6: Final answer
    x = 3,918.51

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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.