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Finding the Fourth Proportional to 1,411.44, 2,114.28 and 726

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Solution

The fourth proportional to 1,411.44, 2,114.28 and 726 is: 1,087.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.44 : 2,114.28 = 726 : x
  2. Step 2: Convert to fraction form
    1,411.44/2,114.28 = 726/x
  3. Step 3: Cross multiply
    1,411.44x = 2,114.28 × 726
  4. Step 4: Simplify right side
    1,411.44x = 1,534,967.28
  5. Step 5: Solve for x
    x = 1,534,967.28/1,411.44
  6. Step 6: Final answer
    x = 1,087.52

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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.