Home / 6,626.88-9,143.28-4,107.78

Finding the Fourth Proportional to 6,626.88, 9,143.28 and 4,107.78

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Solution

The fourth proportional to 6,626.88, 9,143.28 and 4,107.78 is: 5,667.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,626.88 : 9,143.28 = 4,107.78 : x
  2. Step 2: Convert to fraction form
    6,626.88/9,143.28 = 4,107.78/x
  3. Step 3: Cross multiply
    6,626.88x = 9,143.28 × 4,107.78
  4. Step 4: Simplify right side
    6,626.88x = 37,558,582.72
  5. Step 5: Solve for x
    x = 37,558,582.72/6,626.88
  6. Step 6: Final answer
    x = 5,667.61

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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.