Home / 1,729.35-2,386.46-1,021.61

Finding the Fourth Proportional to 1,729.35, 2,386.46 and 1,021.61

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Solution

The fourth proportional to 1,729.35, 2,386.46 and 1,021.61 is: 1,409.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.35 : 2,386.46 = 1,021.61 : x
  2. Step 2: Convert to fraction form
    1,729.35/2,386.46 = 1,021.61/x
  3. Step 3: Cross multiply
    1,729.35x = 2,386.46 × 1,021.61
  4. Step 4: Simplify right side
    1,729.35x = 2,438,039.92
  5. Step 5: Solve for x
    x = 2,438,039.92/1,729.35
  6. Step 6: Final answer
    x = 1,409.80

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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.