Home / 2,581.71-3,880.34-1,707.21

Finding the Fourth Proportional to 2,581.71, 3,880.34 and 1,707.21

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Solution

The fourth proportional to 2,581.71, 3,880.34 and 1,707.21 is: 2,565.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.71 : 3,880.34 = 1,707.21 : x
  2. Step 2: Convert to fraction form
    2,581.71/3,880.34 = 1,707.21/x
  3. Step 3: Cross multiply
    2,581.71x = 3,880.34 × 1,707.21
  4. Step 4: Simplify right side
    2,581.71x = 6,624,553.12
  5. Step 5: Solve for x
    x = 6,624,553.12/2,581.71
  6. Step 6: Final answer
    x = 2,565.96

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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.