Home / 6,640.45-9,162.16-4,279.75

Finding the Fourth Proportional to 6,640.45, 9,162.16 and 4,279.75

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Solution

The fourth proportional to 6,640.45, 9,162.16 and 4,279.75 is: 5,904.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.45 : 9,162.16 = 4,279.75 : x
  2. Step 2: Convert to fraction form
    6,640.45/9,162.16 = 4,279.75/x
  3. Step 3: Cross multiply
    6,640.45x = 9,162.16 × 4,279.75
  4. Step 4: Simplify right side
    6,640.45x = 39,211,754.26
  5. Step 5: Solve for x
    x = 39,211,754.26/6,640.45
  6. Step 6: Final answer
    x = 5,904.98

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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.