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Finding the Fourth Proportional to 5,760.71, 8,642.82 and 2,989.37

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Solution

The fourth proportional to 5,760.71, 8,642.82 and 2,989.37 is: 4,484.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,760.71 : 8,642.82 = 2,989.37 : x
  2. Step 2: Convert to fraction form
    5,760.71/8,642.82 = 2,989.37/x
  3. Step 3: Cross multiply
    5,760.71x = 8,642.82 × 2,989.37
  4. Step 4: Simplify right side
    5,760.71x = 25,836,586.82
  5. Step 5: Solve for x
    x = 25,836,586.82/5,760.71
  6. Step 6: Final answer
    x = 4,484.97

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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.