Home / 1,950.40-2,691.48-1,111.19

Finding the Fourth Proportional to 1,950.40, 2,691.48 and 1,111.19

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Solution

The fourth proportional to 1,950.40, 2,691.48 and 1,111.19 is: 1,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,950.40 : 2,691.48 = 1,111.19 : x
  2. Step 2: Convert to fraction form
    1,950.40/2,691.48 = 1,111.19/x
  3. Step 3: Cross multiply
    1,950.40x = 2,691.48 × 1,111.19
  4. Step 4: Simplify right side
    1,950.40x = 2,990,745.66
  5. Step 5: Solve for x
    x = 2,990,745.66/1,950.40
  6. Step 6: Final answer
    x = 1,533.40

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Half scale
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Double scale
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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.