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Finding the Fourth Proportional to 5,779.88, 8,671.11 and 1,831.37

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Solution

The fourth proportional to 5,779.88, 8,671.11 and 1,831.37 is: 2,747.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.88 : 8,671.11 = 1,831.37 : x
  2. Step 2: Convert to fraction form
    5,779.88/8,671.11 = 1,831.37/x
  3. Step 3: Cross multiply
    5,779.88x = 8,671.11 × 1,831.37
  4. Step 4: Simplify right side
    5,779.88x = 15,880,010.72
  5. Step 5: Solve for x
    x = 15,880,010.72/5,779.88
  6. Step 6: Final answer
    x = 2,747.46

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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.