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Finding the Fourth Proportional to 1,449.78, 2,187.84 and 1,400.94

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Solution

The fourth proportional to 1,449.78, 2,187.84 and 1,400.94 is: 2,114.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.78 : 2,187.84 = 1,400.94 : x
  2. Step 2: Convert to fraction form
    1,449.78/2,187.84 = 1,400.94/x
  3. Step 3: Cross multiply
    1,449.78x = 2,187.84 × 1,400.94
  4. Step 4: Simplify right side
    1,449.78x = 3,065,032.57
  5. Step 5: Solve for x
    x = 3,065,032.57/1,449.78
  6. Step 6: Final answer
    x = 2,114.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.