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Finding the Fourth Proportional to 2,174.69, 3,001.07 and 1,243.19

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Solution

The fourth proportional to 2,174.69, 3,001.07 and 1,243.19 is: 1,715.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.69 : 3,001.07 = 1,243.19 : x
  2. Step 2: Convert to fraction form
    2,174.69/3,001.07 = 1,243.19/x
  3. Step 3: Cross multiply
    2,174.69x = 3,001.07 × 1,243.19
  4. Step 4: Simplify right side
    2,174.69x = 3,730,900.21
  5. Step 5: Solve for x
    x = 3,730,900.21/2,174.69
  6. Step 6: Final answer
    x = 1,715.60

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Half scale
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Double scale
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Similar ratio
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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.