Home / 3,145.20-4,342.32-2,263.92

Finding the Fourth Proportional to 3,145.20, 4,342.32 and 2,263.92

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Solution

The fourth proportional to 3,145.20, 4,342.32 and 2,263.92 is: 3,125.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.20 : 4,342.32 = 2,263.92 : x
  2. Step 2: Convert to fraction form
    3,145.20/4,342.32 = 2,263.92/x
  3. Step 3: Cross multiply
    3,145.20x = 4,342.32 × 2,263.92
  4. Step 4: Simplify right side
    3,145.20x = 9,830,665.09
  5. Step 5: Solve for x
    x = 9,830,665.09/3,145.20
  6. Step 6: Final answer
    x = 3,125.61

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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.