Home / 2,722.40-4,084.32-1,901.60

Finding the Fourth Proportional to 2,722.40, 4,084.32 and 1,901.60

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Solution

The fourth proportional to 2,722.40, 4,084.32 and 1,901.60 is: 2,852.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.40 : 4,084.32 = 1,901.60 : x
  2. Step 2: Convert to fraction form
    2,722.40/4,084.32 = 1,901.60/x
  3. Step 3: Cross multiply
    2,722.40x = 4,084.32 × 1,901.60
  4. Step 4: Simplify right side
    2,722.40x = 7,766,742.91
  5. Step 5: Solve for x
    x = 7,766,742.91/2,722.40
  6. Step 6: Final answer
    x = 2,852.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.