Home / 3,151.14-4,345.26-2,101.38

Finding the Fourth Proportional to 3,151.14, 4,345.26 and 2,101.38

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Solution

The fourth proportional to 3,151.14, 4,345.26 and 2,101.38 is: 2,897.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.14 : 4,345.26 = 2,101.38 : x
  2. Step 2: Convert to fraction form
    3,151.14/4,345.26 = 2,101.38/x
  3. Step 3: Cross multiply
    3,151.14x = 4,345.26 × 2,101.38
  4. Step 4: Simplify right side
    3,151.14x = 9,131,042.46
  5. Step 5: Solve for x
    x = 9,131,042.46/3,151.14
  6. Step 6: Final answer
    x = 2,897.69

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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.