Home / 2,022.38-2,790.81-1,138.13

Finding the Fourth Proportional to 2,022.38, 2,790.81 and 1,138.13

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Solution

The fourth proportional to 2,022.38, 2,790.81 and 1,138.13 is: 1,570.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,022.38 : 2,790.81 = 1,138.13 : x
  2. Step 2: Convert to fraction form
    2,022.38/2,790.81 = 1,138.13/x
  3. Step 3: Cross multiply
    2,022.38x = 2,790.81 × 1,138.13
  4. Step 4: Simplify right side
    2,022.38x = 3,176,290.63
  5. Step 5: Solve for x
    x = 3,176,290.63/2,022.38
  6. Step 6: Final answer
    x = 1,570.57

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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.