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Finding the Fourth Proportional to 1,850.70, 2,553.97 and 1,011.39

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Solution

The fourth proportional to 1,850.70, 2,553.97 and 1,011.39 is: 1,395.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,850.70 : 2,553.97 = 1,011.39 : x
  2. Step 2: Convert to fraction form
    1,850.70/2,553.97 = 1,011.39/x
  3. Step 3: Cross multiply
    1,850.70x = 2,553.97 × 1,011.39
  4. Step 4: Simplify right side
    1,850.70x = 2,583,059.72
  5. Step 5: Solve for x
    x = 2,583,059.72/1,850.70
  6. Step 6: Final answer
    x = 1,395.72

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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.