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Finding the Fourth Proportional to 3,553.70, 5,333.70 and 1,866.47

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Solution

The fourth proportional to 3,553.70, 5,333.70 and 1,866.47 is: 2,801.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,553.70 : 5,333.70 = 1,866.47 : x
  2. Step 2: Convert to fraction form
    3,553.70/5,333.70 = 1,866.47/x
  3. Step 3: Cross multiply
    3,553.70x = 5,333.70 × 1,866.47
  4. Step 4: Simplify right side
    3,553.70x = 9,955,164.37
  5. Step 5: Solve for x
    x = 9,955,164.37/3,553.70
  6. Step 6: Final answer
    x = 2,801.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.