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Finding the Fourth Proportional to 1,736.93, 2,396.75 and 990.77

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Solution

The fourth proportional to 1,736.93, 2,396.75 and 990.77 is: 1,367.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,736.93 : 2,396.75 = 990.77 : x
  2. Step 2: Convert to fraction form
    1,736.93/2,396.75 = 990.77/x
  3. Step 3: Cross multiply
    1,736.93x = 2,396.75 × 990.77
  4. Step 4: Simplify right side
    1,736.93x = 2,374,628.00
  5. Step 5: Solve for x
    x = 2,374,628.00/1,736.93
  6. Step 6: Final answer
    x = 1,367.14

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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.