Home / 1,950.68-2,691.54-1,111.20

Finding the Fourth Proportional to 1,950.68, 2,691.54 and 1,111.20

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Solution

The fourth proportional to 1,950.68, 2,691.54 and 1,111.20 is: 1,533.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,950.68 : 2,691.54 = 1,111.20 : x
  2. Step 2: Convert to fraction form
    1,950.68/2,691.54 = 1,111.20/x
  3. Step 3: Cross multiply
    1,950.68x = 2,691.54 × 1,111.20
  4. Step 4: Simplify right side
    1,950.68x = 2,990,839.25
  5. Step 5: Solve for x
    x = 2,990,839.25/1,950.68
  6. Step 6: Final answer
    x = 1,533.23

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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.