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Finding the Fourth Proportional to 5,170.89, 7,087.70 and 5,097.99

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Solution

The fourth proportional to 5,170.89, 7,087.70 and 5,097.99 is: 6,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.89 : 7,087.70 = 5,097.99 : x
  2. Step 2: Convert to fraction form
    5,170.89/7,087.70 = 5,097.99/x
  3. Step 3: Cross multiply
    5,170.89x = 7,087.70 × 5,097.99
  4. Step 4: Simplify right side
    5,170.89x = 36,133,023.18
  5. Step 5: Solve for x
    x = 36,133,023.18/5,170.89
  6. Step 6: Final answer
    x = 6,987.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.