Home / 6,279.91-8,659.79-5,386.73

Finding the Fourth Proportional to 6,279.91, 8,659.79 and 5,386.73

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Solution

The fourth proportional to 6,279.91, 8,659.79 and 5,386.73 is: 7,428.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.91 : 8,659.79 = 5,386.73 : x
  2. Step 2: Convert to fraction form
    6,279.91/8,659.79 = 5,386.73/x
  3. Step 3: Cross multiply
    6,279.91x = 8,659.79 × 5,386.73
  4. Step 4: Simplify right side
    6,279.91x = 46,647,950.59
  5. Step 5: Solve for x
    x = 46,647,950.59/6,279.91
  6. Step 6: Final answer
    x = 7,428.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.