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Finding the Fourth Proportional to 2,133.88, 2,945.13 and 2,040.48

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Solution

The fourth proportional to 2,133.88, 2,945.13 and 2,040.48 is: 2,816.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.88 : 2,945.13 = 2,040.48 : x
  2. Step 2: Convert to fraction form
    2,133.88/2,945.13 = 2,040.48/x
  3. Step 3: Cross multiply
    2,133.88x = 2,945.13 × 2,040.48
  4. Step 4: Simplify right side
    2,133.88x = 6,009,478.86
  5. Step 5: Solve for x
    x = 6,009,478.86/2,133.88
  6. Step 6: Final answer
    x = 2,816.22

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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.