Home / 4,261.80-6,391.44-1,920.45

Finding the Fourth Proportional to 4,261.80, 6,391.44 and 1,920.45

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Solution

The fourth proportional to 4,261.80, 6,391.44 and 1,920.45 is: 2,880.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,261.80 : 6,391.44 = 1,920.45 : x
  2. Step 2: Convert to fraction form
    4,261.80/6,391.44 = 1,920.45/x
  3. Step 3: Cross multiply
    4,261.80x = 6,391.44 × 1,920.45
  4. Step 4: Simplify right side
    4,261.80x = 12,274,440.95
  5. Step 5: Solve for x
    x = 12,274,440.95/4,261.80
  6. Step 6: Final answer
    x = 2,880.11

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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.