Home / 1,568.58-2,164.66-979.45

Finding the Fourth Proportional to 1,568.58, 2,164.66 and 979.45

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Solution

The fourth proportional to 1,568.58, 2,164.66 and 979.45 is: 1,351.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.58 : 2,164.66 = 979.45 : x
  2. Step 2: Convert to fraction form
    1,568.58/2,164.66 = 979.45/x
  3. Step 3: Cross multiply
    1,568.58x = 2,164.66 × 979.45
  4. Step 4: Simplify right side
    1,568.58x = 2,120,181.53
  5. Step 5: Solve for x
    x = 2,120,181.53/1,568.58
  6. Step 6: Final answer
    x = 1,351.66

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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.