Home / 1,900.78-2,622.44-1,114.28

Finding the Fourth Proportional to 1,900.78, 2,622.44 and 1,114.28

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Solution

The fourth proportional to 1,900.78, 2,622.44 and 1,114.28 is: 1,537.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,900.78 : 2,622.44 = 1,114.28 : x
  2. Step 2: Convert to fraction form
    1,900.78/2,622.44 = 1,114.28/x
  3. Step 3: Cross multiply
    1,900.78x = 2,622.44 × 1,114.28
  4. Step 4: Simplify right side
    1,900.78x = 2,922,132.44
  5. Step 5: Solve for x
    x = 2,922,132.44/1,900.78
  6. Step 6: Final answer
    x = 1,537.33

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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.