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Finding the Fourth Proportional to 2,087.53, 3,131.30 and 626.69

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Solution

The fourth proportional to 2,087.53, 3,131.30 and 626.69 is: 940.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.53 : 3,131.30 = 626.69 : x
  2. Step 2: Convert to fraction form
    2,087.53/3,131.30 = 626.69/x
  3. Step 3: Cross multiply
    2,087.53x = 3,131.30 × 626.69
  4. Step 4: Simplify right side
    2,087.53x = 1,962,354.40
  5. Step 5: Solve for x
    x = 1,962,354.40/2,087.53
  6. Step 6: Final answer
    x = 940.04

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