Home / 3,581.60-5,370.47-1,389.74

Finding the Fourth Proportional to 3,581.60, 5,370.47 and 1,389.74

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Solution

The fourth proportional to 3,581.60, 5,370.47 and 1,389.74 is: 2,083.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.60 : 5,370.47 = 1,389.74 : x
  2. Step 2: Convert to fraction form
    3,581.60/5,370.47 = 1,389.74/x
  3. Step 3: Cross multiply
    3,581.60x = 5,370.47 × 1,389.74
  4. Step 4: Simplify right side
    3,581.60x = 7,463,550.03
  5. Step 5: Solve for x
    x = 7,463,550.03/3,581.60
  6. Step 6: Final answer
    x = 2,083.86

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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.