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Finding the Fourth Proportional to 5,388.03, 8,082.05 and 1,690.55

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Solution

The fourth proportional to 5,388.03, 8,082.05 and 1,690.55 is: 2,535.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.03 : 8,082.05 = 1,690.55 : x
  2. Step 2: Convert to fraction form
    5,388.03/8,082.05 = 1,690.55/x
  3. Step 3: Cross multiply
    5,388.03x = 8,082.05 × 1,690.55
  4. Step 4: Simplify right side
    5,388.03x = 13,663,109.63
  5. Step 5: Solve for x
    x = 13,663,109.63/5,388.03
  6. Step 6: Final answer
    x = 2,535.83

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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.