Home / 6,719.06-10,078.72-1,789.40

Finding the Fourth Proportional to 6,719.06, 10,078.72 and 1,789.40

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Solution

The fourth proportional to 6,719.06, 10,078.72 and 1,789.40 is: 2,684.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,719.06 : 10,078.72 = 1,789.40 : x
  2. Step 2: Convert to fraction form
    6,719.06/10,078.72 = 1,789.40/x
  3. Step 3: Cross multiply
    6,719.06x = 10,078.72 × 1,789.40
  4. Step 4: Simplify right side
    6,719.06x = 18,034,861.57
  5. Step 5: Solve for x
    x = 18,034,861.57/6,719.06
  6. Step 6: Final answer
    x = 2,684.13

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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.