Home / 1,252.21-1,726.83-1,129.16

Finding the Fourth Proportional to 1,252.21, 1,726.83 and 1,129.16

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Solution

The fourth proportional to 1,252.21, 1,726.83 and 1,129.16 is: 1,557.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.21 : 1,726.83 = 1,129.16 : x
  2. Step 2: Convert to fraction form
    1,252.21/1,726.83 = 1,129.16/x
  3. Step 3: Cross multiply
    1,252.21x = 1,726.83 × 1,129.16
  4. Step 4: Simplify right side
    1,252.21x = 1,949,858.73
  5. Step 5: Solve for x
    x = 1,949,858.73/1,252.21
  6. Step 6: Final answer
    x = 1,557.14

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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.