Home / 2,221.16-3,328.70-1,356.20

Finding the Fourth Proportional to 2,221.16, 3,328.70 and 1,356.20

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Solution

The fourth proportional to 2,221.16, 3,328.70 and 1,356.20 is: 2,032.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.16 : 3,328.70 = 1,356.20 : x
  2. Step 2: Convert to fraction form
    2,221.16/3,328.70 = 1,356.20/x
  3. Step 3: Cross multiply
    2,221.16x = 3,328.70 × 1,356.20
  4. Step 4: Simplify right side
    2,221.16x = 4,514,382.94
  5. Step 5: Solve for x
    x = 4,514,382.94/2,221.16
  6. Step 6: Final answer
    x = 2,032.44

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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.