Home / 2,215.50-3,325.31-1,120.65

Finding the Fourth Proportional to 2,215.50, 3,325.31 and 1,120.65

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Solution

The fourth proportional to 2,215.50, 3,325.31 and 1,120.65 is: 1,682.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.50 : 3,325.31 = 1,120.65 : x
  2. Step 2: Convert to fraction form
    2,215.50/3,325.31 = 1,120.65/x
  3. Step 3: Cross multiply
    2,215.50x = 3,325.31 × 1,120.65
  4. Step 4: Simplify right side
    2,215.50x = 3,726,508.65
  5. Step 5: Solve for x
    x = 3,726,508.65/2,215.50
  6. Step 6: Final answer
    x = 1,682.02

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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.