Home / 4,078.12-6,115.46-1,266.61

Finding the Fourth Proportional to 4,078.12, 6,115.46 and 1,266.61

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Solution

The fourth proportional to 4,078.12, 6,115.46 and 1,266.61 is: 1,899.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.12 : 6,115.46 = 1,266.61 : x
  2. Step 2: Convert to fraction form
    4,078.12/6,115.46 = 1,266.61/x
  3. Step 3: Cross multiply
    4,078.12x = 6,115.46 × 1,266.61
  4. Step 4: Simplify right side
    4,078.12x = 7,745,881.17
  5. Step 5: Solve for x
    x = 7,745,881.17/4,078.12
  6. Step 6: Final answer
    x = 1,899.38

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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.