Home / 3,581.40-5,370.74-1,389.85

Finding the Fourth Proportional to 3,581.40, 5,370.74 and 1,389.85

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Solution

The fourth proportional to 3,581.40, 5,370.74 and 1,389.85 is: 2,084.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.40 : 5,370.74 = 1,389.85 : x
  2. Step 2: Convert to fraction form
    3,581.40/5,370.74 = 1,389.85/x
  3. Step 3: Cross multiply
    3,581.40x = 5,370.74 × 1,389.85
  4. Step 4: Simplify right side
    3,581.40x = 7,464,522.99
  5. Step 5: Solve for x
    x = 7,464,522.99/3,581.40
  6. Step 6: Final answer
    x = 2,084.25

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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.