Home / 1,252.35-1,726.40-985.94

Finding the Fourth Proportional to 1,252.35, 1,726.40 and 985.94

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Solution

The fourth proportional to 1,252.35, 1,726.40 and 985.94 is: 1,359.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.35 : 1,726.40 = 985.94 : x
  2. Step 2: Convert to fraction form
    1,252.35/1,726.40 = 985.94/x
  3. Step 3: Cross multiply
    1,252.35x = 1,726.40 × 985.94
  4. Step 4: Simplify right side
    1,252.35x = 1,702,118.18
  5. Step 5: Solve for x
    x = 1,702,118.18/1,252.35
  6. Step 6: Final answer
    x = 1,359.14

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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.