Home / 1,729.45-2,386.41-1,021.33

Finding the Fourth Proportional to 1,729.45, 2,386.41 and 1,021.33

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Solution

The fourth proportional to 1,729.45, 2,386.41 and 1,021.33 is: 1,409.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.45 : 2,386.41 = 1,021.33 : x
  2. Step 2: Convert to fraction form
    1,729.45/2,386.41 = 1,021.33/x
  3. Step 3: Cross multiply
    1,729.45x = 2,386.41 × 1,021.33
  4. Step 4: Simplify right side
    1,729.45x = 2,437,300.19
  5. Step 5: Solve for x
    x = 2,437,300.19/1,729.45
  6. Step 6: Final answer
    x = 1,409.29

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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.