Home / 3,215.25-4,440.69-2,165.49

Finding the Fourth Proportional to 3,215.25, 4,440.69 and 2,165.49

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Solution

The fourth proportional to 3,215.25, 4,440.69 and 2,165.49 is: 2,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.25 : 4,440.69 = 2,165.49 : x
  2. Step 2: Convert to fraction form
    3,215.25/4,440.69 = 2,165.49/x
  3. Step 3: Cross multiply
    3,215.25x = 4,440.69 × 2,165.49
  4. Step 4: Simplify right side
    3,215.25x = 9,616,269.79
  5. Step 5: Solve for x
    x = 9,616,269.79/3,215.25
  6. Step 6: Final answer
    x = 2,990.83

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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.