Home / 3,111.38-4,293.66-1,785.14

Finding the Fourth Proportional to 3,111.38, 4,293.66 and 1,785.14

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Solution

The fourth proportional to 3,111.38, 4,293.66 and 1,785.14 is: 2,463.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.38 : 4,293.66 = 1,785.14 : x
  2. Step 2: Convert to fraction form
    3,111.38/4,293.66 = 1,785.14/x
  3. Step 3: Cross multiply
    3,111.38x = 4,293.66 × 1,785.14
  4. Step 4: Simplify right side
    3,111.38x = 7,664,784.21
  5. Step 5: Solve for x
    x = 7,664,784.21/3,111.38
  6. Step 6: Final answer
    x = 2,463.47

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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.