Home / 8,078.89-11,144.32-4,720.99

Finding the Fourth Proportional to 8,078.89, 11,144.32 and 4,720.99

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Solution

The fourth proportional to 8,078.89, 11,144.32 and 4,720.99 is: 6,512.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.89 : 11,144.32 = 4,720.99 : x
  2. Step 2: Convert to fraction form
    8,078.89/11,144.32 = 4,720.99/x
  3. Step 3: Cross multiply
    8,078.89x = 11,144.32 × 4,720.99
  4. Step 4: Simplify right side
    8,078.89x = 52,612,223.28
  5. Step 5: Solve for x
    x = 52,612,223.28/8,078.89
  6. Step 6: Final answer
    x = 6,512.31

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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.