Home / 2,022.35-2,790.90-1,225.53

Finding the Fourth Proportional to 2,022.35, 2,790.90 and 1,225.53

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Solution

The fourth proportional to 2,022.35, 2,790.90 and 1,225.53 is: 1,691.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,022.35 : 2,790.90 = 1,225.53 : x
  2. Step 2: Convert to fraction form
    2,022.35/2,790.90 = 1,225.53/x
  3. Step 3: Cross multiply
    2,022.35x = 2,790.90 × 1,225.53
  4. Step 4: Simplify right side
    2,022.35x = 3,420,331.68
  5. Step 5: Solve for x
    x = 3,420,331.68/2,022.35
  6. Step 6: Final answer
    x = 1,691.27

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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.