Home / 3,100.85-4,647.66-1,431.47

Finding the Fourth Proportional to 3,100.85, 4,647.66 and 1,431.47

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Solution

The fourth proportional to 3,100.85, 4,647.66 and 1,431.47 is: 2,145.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.85 : 4,647.66 = 1,431.47 : x
  2. Step 2: Convert to fraction form
    3,100.85/4,647.66 = 1,431.47/x
  3. Step 3: Cross multiply
    3,100.85x = 4,647.66 × 1,431.47
  4. Step 4: Simplify right side
    3,100.85x = 6,652,985.86
  5. Step 5: Solve for x
    x = 6,652,985.86/3,100.85
  6. Step 6: Final answer
    x = 2,145.54

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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.