Home / 2,690.28-3,712.46-1,571.32

Finding the Fourth Proportional to 2,690.28, 3,712.46 and 1,571.32

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Solution

The fourth proportional to 2,690.28, 3,712.46 and 1,571.32 is: 2,168.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.28 : 3,712.46 = 1,571.32 : x
  2. Step 2: Convert to fraction form
    2,690.28/3,712.46 = 1,571.32/x
  3. Step 3: Cross multiply
    2,690.28x = 3,712.46 × 1,571.32
  4. Step 4: Simplify right side
    2,690.28x = 5,833,444.08
  5. Step 5: Solve for x
    x = 5,833,444.08/2,690.28
  6. Step 6: Final answer
    x = 2,168.34

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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.