Home / 1,868.56-2,578.14-1,122.28

Finding the Fourth Proportional to 1,868.56, 2,578.14 and 1,122.28

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Solution

The fourth proportional to 1,868.56, 2,578.14 and 1,122.28 is: 1,548.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.56 : 2,578.14 = 1,122.28 : x
  2. Step 2: Convert to fraction form
    1,868.56/2,578.14 = 1,122.28/x
  3. Step 3: Cross multiply
    1,868.56x = 2,578.14 × 1,122.28
  4. Step 4: Simplify right side
    1,868.56x = 2,893,394.96
  5. Step 5: Solve for x
    x = 2,893,394.96/1,868.56
  6. Step 6: Final answer
    x = 1,548.46

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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.