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Finding the Fourth Proportional to 2,089.03, 3,134.11 and 840.00

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Solution

The fourth proportional to 2,089.03, 3,134.11 and 840.00 is: 1,260.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.03 : 3,134.11 = 840.00 : x
  2. Step 2: Convert to fraction form
    2,089.03/3,134.11 = 840.00/x
  3. Step 3: Cross multiply
    2,089.03x = 3,134.11 × 840.00
  4. Step 4: Simplify right side
    2,089.03x = 2,632,653.95
  5. Step 5: Solve for x
    x = 2,632,653.95/2,089.03
  6. Step 6: Final answer
    x = 1,260.23

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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.