Home / 3,581.66-5,366.55-1,389.18

Finding the Fourth Proportional to 3,581.66, 5,366.55 and 1,389.18

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Solution

The fourth proportional to 3,581.66, 5,366.55 and 1,389.18 is: 2,081.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.66 : 5,366.55 = 1,389.18 : x
  2. Step 2: Convert to fraction form
    3,581.66/5,366.55 = 1,389.18/x
  3. Step 3: Cross multiply
    3,581.66x = 5,366.55 × 1,389.18
  4. Step 4: Simplify right side
    3,581.66x = 7,455,103.93
  5. Step 5: Solve for x
    x = 7,455,103.93/3,581.66
  6. Step 6: Final answer
    x = 2,081.47

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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.