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Finding the Fourth Proportional to 8,999.75, 13,500.77 and 3,077.78

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Solution

The fourth proportional to 8,999.75, 13,500.77 and 3,077.78 is: 4,617.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,999.75 : 13,500.77 = 3,077.78 : x
  2. Step 2: Convert to fraction form
    8,999.75/13,500.77 = 3,077.78/x
  3. Step 3: Cross multiply
    8,999.75x = 13,500.77 × 3,077.78
  4. Step 4: Simplify right side
    8,999.75x = 41,552,317.00
  5. Step 5: Solve for x
    x = 41,552,317.00/8,999.75
  6. Step 6: Final answer
    x = 4,617.05

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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.