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Finding the Fourth Proportional to 5,719.60, 8,593.80 and 3,640.60

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Solution

The fourth proportional to 5,719.60, 8,593.80 and 3,640.60 is: 5,470.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.60 : 8,593.80 = 3,640.60 : x
  2. Step 2: Convert to fraction form
    5,719.60/8,593.80 = 3,640.60/x
  3. Step 3: Cross multiply
    5,719.60x = 8,593.80 × 3,640.60
  4. Step 4: Simplify right side
    5,719.60x = 31,286,588.28
  5. Step 5: Solve for x
    x = 31,286,588.28/5,719.60
  6. Step 6: Final answer
    x = 5,470.07

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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.