Home / 1,765.07-2,435.70-979.06

Finding the Fourth Proportional to 1,765.07, 2,435.70 and 979.06

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Solution

The fourth proportional to 1,765.07, 2,435.70 and 979.06 is: 1,351.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.07 : 2,435.70 = 979.06 : x
  2. Step 2: Convert to fraction form
    1,765.07/2,435.70 = 979.06/x
  3. Step 3: Cross multiply
    1,765.07x = 2,435.70 × 979.06
  4. Step 4: Simplify right side
    1,765.07x = 2,384,696.44
  5. Step 5: Solve for x
    x = 2,384,696.44/1,765.07
  6. Step 6: Final answer
    x = 1,351.05

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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.