Home / 1,571.11-2,165.64-1,255.38

Finding the Fourth Proportional to 1,571.11, 2,165.64 and 1,255.38

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Solution

The fourth proportional to 1,571.11, 2,165.64 and 1,255.38 is: 1,730.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.11 : 2,165.64 = 1,255.38 : x
  2. Step 2: Convert to fraction form
    1,571.11/2,165.64 = 1,255.38/x
  3. Step 3: Cross multiply
    1,571.11x = 2,165.64 × 1,255.38
  4. Step 4: Simplify right side
    1,571.11x = 2,718,690.32
  5. Step 5: Solve for x
    x = 2,718,690.32/1,571.11
  6. Step 6: Final answer
    x = 1,730.43

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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.