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Finding the Fourth Proportional to 2,090, 3,133.56 and 1,049.68

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Solution

The fourth proportional to 2,090, 3,133.56 and 1,049.68 is: 1,573.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090 : 3,133.56 = 1,049.68 : x
  2. Step 2: Convert to fraction form
    2,090/3,133.56 = 1,049.68/x
  3. Step 3: Cross multiply
    2,090x = 3,133.56 × 1,049.68
  4. Step 4: Simplify right side
    2,090x = 3,289,235.26
  5. Step 5: Solve for x
    x = 3,289,235.26/2,090
  6. Step 6: Final answer
    x = 1,573.80

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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.