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Finding the Fourth Proportional to 2,087.00, 3,132.09 and 772.00

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Solution

The fourth proportional to 2,087.00, 3,132.09 and 772.00 is: 1,158.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.00 : 3,132.09 = 772.00 : x
  2. Step 2: Convert to fraction form
    2,087.00/3,132.09 = 772.00/x
  3. Step 3: Cross multiply
    2,087.00x = 3,132.09 × 772.00
  4. Step 4: Simplify right side
    2,087.00x = 2,417,964.68
  5. Step 5: Solve for x
    x = 2,417,964.68/2,087.00
  6. Step 6: Final answer
    x = 1,158.58

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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.