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Finding the Fourth Proportional to 5,765.28, 8,647.56 and 2,991.12

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Solution

The fourth proportional to 5,765.28, 8,647.56 and 2,991.12 is: 4,486.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,765.28 : 8,647.56 = 2,991.12 : x
  2. Step 2: Convert to fraction form
    5,765.28/8,647.56 = 2,991.12/x
  3. Step 3: Cross multiply
    5,765.28x = 8,647.56 × 2,991.12
  4. Step 4: Simplify right side
    5,765.28x = 25,865,889.67
  5. Step 5: Solve for x
    x = 25,865,889.67/5,765.28
  6. Step 6: Final answer
    x = 4,486.49

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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.