Home / 2,220.80-3,064.97-1,434.29

Finding the Fourth Proportional to 2,220.80, 3,064.97 and 1,434.29

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Solution

The fourth proportional to 2,220.80, 3,064.97 and 1,434.29 is: 1,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.80 : 3,064.97 = 1,434.29 : x
  2. Step 2: Convert to fraction form
    2,220.80/3,064.97 = 1,434.29/x
  3. Step 3: Cross multiply
    2,220.80x = 3,064.97 × 1,434.29
  4. Step 4: Simplify right side
    2,220.80x = 4,396,044.08
  5. Step 5: Solve for x
    x = 4,396,044.08/2,220.80
  6. Step 6: Final answer
    x = 1,979.49

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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.