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Finding the Fourth Proportional to 5,716.53, 7,890.08 and 3,620.25

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Solution

The fourth proportional to 5,716.53, 7,890.08 and 3,620.25 is: 4,996.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,716.53 : 7,890.08 = 3,620.25 : x
  2. Step 2: Convert to fraction form
    5,716.53/7,890.08 = 3,620.25/x
  3. Step 3: Cross multiply
    5,716.53x = 7,890.08 × 3,620.25
  4. Step 4: Simplify right side
    5,716.53x = 28,564,044.02
  5. Step 5: Solve for x
    x = 28,564,044.02/5,716.53
  6. Step 6: Final answer
    x = 4,996.75

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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.