Home / 6,640.75-9,168.64-4,126.61

Finding the Fourth Proportional to 6,640.75, 9,168.64 and 4,126.61

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Solution

The fourth proportional to 6,640.75, 9,168.64 and 4,126.61 is: 5,697.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.75 : 9,168.64 = 4,126.61 : x
  2. Step 2: Convert to fraction form
    6,640.75/9,168.64 = 4,126.61/x
  3. Step 3: Cross multiply
    6,640.75x = 9,168.64 × 4,126.61
  4. Step 4: Simplify right side
    6,640.75x = 37,835,437.33
  5. Step 5: Solve for x
    x = 37,835,437.33/6,640.75
  6. Step 6: Final answer
    x = 5,697.46

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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.