Home / 5,687.35-8,561.74-5,115.17

Finding the Fourth Proportional to 5,687.35, 8,561.74 and 5,115.17

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Solution

The fourth proportional to 5,687.35, 8,561.74 and 5,115.17 is: 7,700.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.35 : 8,561.74 = 5,115.17 : x
  2. Step 2: Convert to fraction form
    5,687.35/8,561.74 = 5,115.17/x
  3. Step 3: Cross multiply
    5,687.35x = 8,561.74 × 5,115.17
  4. Step 4: Simplify right side
    5,687.35x = 43,794,755.60
  5. Step 5: Solve for x
    x = 43,794,755.60/5,687.35
  6. Step 6: Final answer
    x = 7,700.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.