Home / 4,081.12-6,121.58-1,307.98

Finding the Fourth Proportional to 4,081.12, 6,121.58 and 1,307.98

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Solution

The fourth proportional to 4,081.12, 6,121.58 and 1,307.98 is: 1,961.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,081.12 : 6,121.58 = 1,307.98 : x
  2. Step 2: Convert to fraction form
    4,081.12/6,121.58 = 1,307.98/x
  3. Step 3: Cross multiply
    4,081.12x = 6,121.58 × 1,307.98
  4. Step 4: Simplify right side
    4,081.12x = 8,006,905.32
  5. Step 5: Solve for x
    x = 8,006,905.32/4,081.12
  6. Step 6: Final answer
    x = 1,961.94

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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.