Home / 5,388.10-8,082.13-1,690.35

Finding the Fourth Proportional to 5,388.10, 8,082.13 and 1,690.35

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Solution

The fourth proportional to 5,388.10, 8,082.13 and 1,690.35 is: 2,535.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.10 : 8,082.13 = 1,690.35 : x
  2. Step 2: Convert to fraction form
    5,388.10/8,082.13 = 1,690.35/x
  3. Step 3: Cross multiply
    5,388.10x = 8,082.13 × 1,690.35
  4. Step 4: Simplify right side
    5,388.10x = 13,661,628.45
  5. Step 5: Solve for x
    x = 13,661,628.45/5,388.10
  6. Step 6: Final answer
    x = 2,535.52

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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.