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Finding the Fourth Proportional to 3,045.26, 4,203 and 2,906.76

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Solution

The fourth proportional to 3,045.26, 4,203 and 2,906.76 is: 4,011.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,045.26 : 4,203 = 2,906.76 : x
  2. Step 2: Convert to fraction form
    3,045.26/4,203 = 2,906.76/x
  3. Step 3: Cross multiply
    3,045.26x = 4,203 × 2,906.76
  4. Step 4: Simplify right side
    3,045.26x = 12,217,112.28
  5. Step 5: Solve for x
    x = 12,217,112.28/3,045.26
  6. Step 6: Final answer
    x = 4,011.85

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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.