Home / 1,916.30-2,872.20-1,895.78

Finding the Fourth Proportional to 1,916.30, 2,872.20 and 1,895.78

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Solution

The fourth proportional to 1,916.30, 2,872.20 and 1,895.78 is: 2,841.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.30 : 2,872.20 = 1,895.78 : x
  2. Step 2: Convert to fraction form
    1,916.30/2,872.20 = 1,895.78/x
  3. Step 3: Cross multiply
    1,916.30x = 2,872.20 × 1,895.78
  4. Step 4: Simplify right side
    1,916.30x = 5,445,059.32
  5. Step 5: Solve for x
    x = 5,445,059.32/1,916.30
  6. Step 6: Final answer
    x = 2,841.44

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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.