Home / 1,869.44-2,578.97-1,122.12

Finding the Fourth Proportional to 1,869.44, 2,578.97 and 1,122.12

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Solution

The fourth proportional to 1,869.44, 2,578.97 and 1,122.12 is: 1,548.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.44 : 2,578.97 = 1,122.12 : x
  2. Step 2: Convert to fraction form
    1,869.44/2,578.97 = 1,122.12/x
  3. Step 3: Cross multiply
    1,869.44x = 2,578.97 × 1,122.12
  4. Step 4: Simplify right side
    1,869.44x = 2,893,916.62
  5. Step 5: Solve for x
    x = 2,893,916.62/1,869.44
  6. Step 6: Final answer
    x = 1,548.01

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1.5x scale

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.