Home / 1,729.26-2,386.40-983.21

Finding the Fourth Proportional to 1,729.26, 2,386.40 and 983.21

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Solution

The fourth proportional to 1,729.26, 2,386.40 and 983.21 is: 1,356.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.26 : 2,386.40 = 983.21 : x
  2. Step 2: Convert to fraction form
    1,729.26/2,386.40 = 983.21/x
  3. Step 3: Cross multiply
    1,729.26x = 2,386.40 × 983.21
  4. Step 4: Simplify right side
    1,729.26x = 2,346,315.50
  5. Step 5: Solve for x
    x = 2,346,315.50/1,729.26
  6. Step 6: Final answer
    x = 1,356.83

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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.