Home / 1,901.60-2,839.91-1,620.96

Finding the Fourth Proportional to 1,901.60, 2,839.91 and 1,620.96

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Solution

The fourth proportional to 1,901.60, 2,839.91 and 1,620.96 is: 2,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,901.60 : 2,839.91 = 1,620.96 : x
  2. Step 2: Convert to fraction form
    1,901.60/2,839.91 = 1,620.96/x
  3. Step 3: Cross multiply
    1,901.60x = 2,839.91 × 1,620.96
  4. Step 4: Simplify right side
    1,901.60x = 4,603,361.76
  5. Step 5: Solve for x
    x = 4,603,361.76/1,901.60
  6. Step 6: Final answer
    x = 2,420.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.