Home / 2,961.40-4,436.70-1,805.80

Finding the Fourth Proportional to 2,961.40, 4,436.70 and 1,805.80

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Solution

The fourth proportional to 2,961.40, 4,436.70 and 1,805.80 is: 2,705.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.40 : 4,436.70 = 1,805.80 : x
  2. Step 2: Convert to fraction form
    2,961.40/4,436.70 = 1,805.80/x
  3. Step 3: Cross multiply
    2,961.40x = 4,436.70 × 1,805.80
  4. Step 4: Simplify right side
    2,961.40x = 8,011,792.86
  5. Step 5: Solve for x
    x = 8,011,792.86/2,961.40
  6. Step 6: Final answer
    x = 2,705.41

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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.