Home / 9,876.44-13,630.77-5,629.05

Finding the Fourth Proportional to 9,876.44, 13,630.77 and 5,629.05

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Solution

The fourth proportional to 9,876.44, 13,630.77 and 5,629.05 is: 7,768.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,876.44 : 13,630.77 = 5,629.05 : x
  2. Step 2: Convert to fraction form
    9,876.44/13,630.77 = 5,629.05/x
  3. Step 3: Cross multiply
    9,876.44x = 13,630.77 × 5,629.05
  4. Step 4: Simplify right side
    9,876.44x = 76,728,285.87
  5. Step 5: Solve for x
    x = 76,728,285.87/9,876.44
  6. Step 6: Final answer
    x = 7,768.82

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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.