Home / 2,039.24-2,812.64-1,292.55

Finding the Fourth Proportional to 2,039.24, 2,812.64 and 1,292.55

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Solution

The fourth proportional to 2,039.24, 2,812.64 and 1,292.55 is: 1,782.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,039.24 : 2,812.64 = 1,292.55 : x
  2. Step 2: Convert to fraction form
    2,039.24/2,812.64 = 1,292.55/x
  3. Step 3: Cross multiply
    2,039.24x = 2,812.64 × 1,292.55
  4. Step 4: Simplify right side
    2,039.24x = 3,635,471.37
  5. Step 5: Solve for x
    x = 3,635,471.37/2,039.24
  6. Step 6: Final answer
    x = 1,782.76

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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.