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Finding the Fourth Proportional to 5,679.81, 8,512.81 and 3,040.83

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Solution

The fourth proportional to 5,679.81, 8,512.81 and 3,040.83 is: 4,557.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.81 : 8,512.81 = 3,040.83 : x
  2. Step 2: Convert to fraction form
    5,679.81/8,512.81 = 3,040.83/x
  3. Step 3: Cross multiply
    5,679.81x = 8,512.81 × 3,040.83
  4. Step 4: Simplify right side
    5,679.81x = 25,886,000.43
  5. Step 5: Solve for x
    x = 25,886,000.43/5,679.81
  6. Step 6: Final answer
    x = 4,557.55

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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.