Home / 2,136.38-2,948.13-1,192.21

Finding the Fourth Proportional to 2,136.38, 2,948.13 and 1,192.21

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Solution

The fourth proportional to 2,136.38, 2,948.13 and 1,192.21 is: 1,645.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.38 : 2,948.13 = 1,192.21 : x
  2. Step 2: Convert to fraction form
    2,136.38/2,948.13 = 1,192.21/x
  3. Step 3: Cross multiply
    2,136.38x = 2,948.13 × 1,192.21
  4. Step 4: Simplify right side
    2,136.38x = 3,514,790.07
  5. Step 5: Solve for x
    x = 3,514,790.07/2,136.38
  6. Step 6: Final answer
    x = 1,645.21

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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.