Home / 2,812.24-3,880.85-1,553.29

Finding the Fourth Proportional to 2,812.24, 3,880.85 and 1,553.29

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Solution

The fourth proportional to 2,812.24, 3,880.85 and 1,553.29 is: 2,143.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.24 : 3,880.85 = 1,553.29 : x
  2. Step 2: Convert to fraction form
    2,812.24/3,880.85 = 1,553.29/x
  3. Step 3: Cross multiply
    2,812.24x = 3,880.85 × 1,553.29
  4. Step 4: Simplify right side
    2,812.24x = 6,028,079.68
  5. Step 5: Solve for x
    x = 6,028,079.68/2,812.24
  6. Step 6: Final answer
    x = 2,143.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.