Home / 1,916.28-2,874.72-1,039.08

Finding the Fourth Proportional to 1,916.28, 2,874.72 and 1,039.08

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Solution

The fourth proportional to 1,916.28, 2,874.72 and 1,039.08 is: 1,558.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.28 : 2,874.72 = 1,039.08 : x
  2. Step 2: Convert to fraction form
    1,916.28/2,874.72 = 1,039.08/x
  3. Step 3: Cross multiply
    1,916.28x = 2,874.72 × 1,039.08
  4. Step 4: Simplify right side
    1,916.28x = 2,987,064.06
  5. Step 5: Solve for x
    x = 2,987,064.06/1,916.28
  6. Step 6: Final answer
    x = 1,558.78

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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.