Home / 8,418.12-11,618.12-4,880.60

Finding the Fourth Proportional to 8,418.12, 11,618.12 and 4,880.60

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Solution

The fourth proportional to 8,418.12, 11,618.12 and 4,880.60 is: 6,735.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.12 : 11,618.12 = 4,880.60 : x
  2. Step 2: Convert to fraction form
    8,418.12/11,618.12 = 4,880.60/x
  3. Step 3: Cross multiply
    8,418.12x = 11,618.12 × 4,880.60
  4. Step 4: Simplify right side
    8,418.12x = 56,703,396.47
  5. Step 5: Solve for x
    x = 56,703,396.47/8,418.12
  6. Step 6: Final answer
    x = 6,735.87

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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.