Home / 3,231.40-4,838.46-1,689.16

Finding the Fourth Proportional to 3,231.40, 4,838.46 and 1,689.16

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Solution

The fourth proportional to 3,231.40, 4,838.46 and 1,689.16 is: 2,529.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.40 : 4,838.46 = 1,689.16 : x
  2. Step 2: Convert to fraction form
    3,231.40/4,838.46 = 1,689.16/x
  3. Step 3: Cross multiply
    3,231.40x = 4,838.46 × 1,689.16
  4. Step 4: Simplify right side
    3,231.40x = 8,172,933.09
  5. Step 5: Solve for x
    x = 8,172,933.09/3,231.40
  6. Step 6: Final answer
    x = 2,529.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.