Home / 1,890.22-2,607.81-1,143.64

Finding the Fourth Proportional to 1,890.22, 2,607.81 and 1,143.64

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Solution

The fourth proportional to 1,890.22, 2,607.81 and 1,143.64 is: 1,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.22 : 2,607.81 = 1,143.64 : x
  2. Step 2: Convert to fraction form
    1,890.22/2,607.81 = 1,143.64/x
  3. Step 3: Cross multiply
    1,890.22x = 2,607.81 × 1,143.64
  4. Step 4: Simplify right side
    1,890.22x = 2,982,395.83
  5. Step 5: Solve for x
    x = 2,982,395.83/1,890.22
  6. Step 6: Final answer
    x = 1,577.80

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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.