Home / 1,729.40-2,386.97-983.75

Finding the Fourth Proportional to 1,729.40, 2,386.97 and 983.75

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Solution

The fourth proportional to 1,729.40, 2,386.97 and 983.75 is: 1,357.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.40 : 2,386.97 = 983.75 : x
  2. Step 2: Convert to fraction form
    1,729.40/2,386.97 = 983.75/x
  3. Step 3: Cross multiply
    1,729.40x = 2,386.97 × 983.75
  4. Step 4: Simplify right side
    1,729.40x = 2,348,190.16
  5. Step 5: Solve for x
    x = 2,348,190.16/1,729.40
  6. Step 6: Final answer
    x = 1,357.81

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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.