Home / 1,950.57-2,691.60-1,111.21

Finding the Fourth Proportional to 1,950.57, 2,691.60 and 1,111.21

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Solution

The fourth proportional to 1,950.57, 2,691.60 and 1,111.21 is: 1,533.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,950.57 : 2,691.60 = 1,111.21 : x
  2. Step 2: Convert to fraction form
    1,950.57/2,691.60 = 1,111.21/x
  3. Step 3: Cross multiply
    1,950.57x = 2,691.60 × 1,111.21
  4. Step 4: Simplify right side
    1,950.57x = 2,990,921.94
  5. Step 5: Solve for x
    x = 2,990,921.94/1,950.57
  6. Step 6: Final answer
    x = 1,533.36

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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.