Home / 2,021.72-2,790.01-1,125.53

Finding the Fourth Proportional to 2,021.72, 2,790.01 and 1,125.53

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Solution

The fourth proportional to 2,021.72, 2,790.01 and 1,125.53 is: 1,553.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.72 : 2,790.01 = 1,125.53 : x
  2. Step 2: Convert to fraction form
    2,021.72/2,790.01 = 1,125.53/x
  3. Step 3: Cross multiply
    2,021.72x = 2,790.01 × 1,125.53
  4. Step 4: Simplify right side
    2,021.72x = 3,140,239.96
  5. Step 5: Solve for x
    x = 3,140,239.96/2,021.72
  6. Step 6: Final answer
    x = 1,553.25

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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.