Home / 2,017.78-3,026.68-921.38

Finding the Fourth Proportional to 2,017.78, 3,026.68 and 921.38

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Solution

The fourth proportional to 2,017.78, 3,026.68 and 921.38 is: 1,382.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,017.78 : 3,026.68 = 921.38 : x
  2. Step 2: Convert to fraction form
    2,017.78/3,026.68 = 921.38/x
  3. Step 3: Cross multiply
    2,017.78x = 3,026.68 × 921.38
  4. Step 4: Simplify right side
    2,017.78x = 2,788,704.98
  5. Step 5: Solve for x
    x = 2,788,704.98/2,017.78
  6. Step 6: Final answer
    x = 1,382.07

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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.