Home / 1,939.84-2,675.21-1,443.72

Finding the Fourth Proportional to 1,939.84, 2,675.21 and 1,443.72

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Solution

The fourth proportional to 1,939.84, 2,675.21 and 1,443.72 is: 1,991.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.84 : 2,675.21 = 1,443.72 : x
  2. Step 2: Convert to fraction form
    1,939.84/2,675.21 = 1,443.72/x
  3. Step 3: Cross multiply
    1,939.84x = 2,675.21 × 1,443.72
  4. Step 4: Simplify right side
    1,939.84x = 3,862,254.18
  5. Step 5: Solve for x
    x = 3,862,254.18/1,939.84
  6. Step 6: Final answer
    x = 1,991.02

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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.