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Finding the Fourth Proportional to 5,388.41, 8,082.61 and 1,690.93

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Solution

The fourth proportional to 5,388.41, 8,082.61 and 1,690.93 is: 2,536.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.41 : 8,082.61 = 1,690.93 : x
  2. Step 2: Convert to fraction form
    5,388.41/8,082.61 = 1,690.93/x
  3. Step 3: Cross multiply
    5,388.41x = 8,082.61 × 1,690.93
  4. Step 4: Simplify right side
    5,388.41x = 13,667,087.31
  5. Step 5: Solve for x
    x = 13,667,087.31/5,388.41
  6. Step 6: Final answer
    x = 2,536.39

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Similar ratio
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1.5x scale

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.