Home / 1,568.78-2,163.46-1,008.26

Finding the Fourth Proportional to 1,568.78, 2,163.46 and 1,008.26

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Solution

The fourth proportional to 1,568.78, 2,163.46 and 1,008.26 is: 1,390.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.78 : 2,163.46 = 1,008.26 : x
  2. Step 2: Convert to fraction form
    1,568.78/2,163.46 = 1,008.26/x
  3. Step 3: Cross multiply
    1,568.78x = 2,163.46 × 1,008.26
  4. Step 4: Simplify right side
    1,568.78x = 2,181,330.18
  5. Step 5: Solve for x
    x = 2,181,330.18/1,568.78
  6. Step 6: Final answer
    x = 1,390.46

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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.