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Finding the Fourth Proportional to 5,388.87, 8,082.66 and 1,878.27

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Solution

The fourth proportional to 5,388.87, 8,082.66 and 1,878.27 is: 2,817.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.87 : 8,082.66 = 1,878.27 : x
  2. Step 2: Convert to fraction form
    5,388.87/8,082.66 = 1,878.27/x
  3. Step 3: Cross multiply
    5,388.87x = 8,082.66 × 1,878.27
  4. Step 4: Simplify right side
    5,388.87x = 15,181,417.80
  5. Step 5: Solve for x
    x = 15,181,417.80/5,388.87
  6. Step 6: Final answer
    x = 2,817.18

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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.