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Finding the Fourth Proportional to 7,076.77, 9,765.36 and 4,091.92

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Solution

The fourth proportional to 7,076.77, 9,765.36 and 4,091.92 is: 5,646.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,076.77 : 9,765.36 = 4,091.92 : x
  2. Step 2: Convert to fraction form
    7,076.77/9,765.36 = 4,091.92/x
  3. Step 3: Cross multiply
    7,076.77x = 9,765.36 × 4,091.92
  4. Step 4: Simplify right side
    7,076.77x = 39,959,047.48
  5. Step 5: Solve for x
    x = 39,959,047.48/7,076.77
  6. Step 6: Final answer
    x = 5,646.51

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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.