Home / 8,418.72-11,617.92-4,880.64

Finding the Fourth Proportional to 8,418.72, 11,617.92 and 4,880.64

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Solution

The fourth proportional to 8,418.72, 11,617.92 and 4,880.64 is: 6,735.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.72 : 11,617.92 = 4,880.64 : x
  2. Step 2: Convert to fraction form
    8,418.72/11,617.92 = 4,880.64/x
  3. Step 3: Cross multiply
    8,418.72x = 11,617.92 × 4,880.64
  4. Step 4: Simplify right side
    8,418.72x = 56,702,885.07
  5. Step 5: Solve for x
    x = 56,702,885.07/8,418.72
  6. Step 6: Final answer
    x = 6,735.33

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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.