Home / 1,921.18-2,878.82-1,294.14

Finding the Fourth Proportional to 1,921.18, 2,878.82 and 1,294.14

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Solution

The fourth proportional to 1,921.18, 2,878.82 and 1,294.14 is: 1,939.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.18 : 2,878.82 = 1,294.14 : x
  2. Step 2: Convert to fraction form
    1,921.18/2,878.82 = 1,294.14/x
  3. Step 3: Cross multiply
    1,921.18x = 2,878.82 × 1,294.14
  4. Step 4: Simplify right side
    1,921.18x = 3,725,596.11
  5. Step 5: Solve for x
    x = 3,725,596.11/1,921.18
  6. Step 6: Final answer
    x = 1,939.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.