Home / 6,620.24-9,915.78-4,418.66

Finding the Fourth Proportional to 6,620.24, 9,915.78 and 4,418.66

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Solution

The fourth proportional to 6,620.24, 9,915.78 and 4,418.66 is: 6,618.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.24 : 9,915.78 = 4,418.66 : x
  2. Step 2: Convert to fraction form
    6,620.24/9,915.78 = 4,418.66/x
  3. Step 3: Cross multiply
    6,620.24x = 9,915.78 × 4,418.66
  4. Step 4: Simplify right side
    6,620.24x = 43,814,460.45
  5. Step 5: Solve for x
    x = 43,814,460.45/6,620.24
  6. Step 6: Final answer
    x = 6,618.26

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1.5x scale

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.