Home / 4,128.14-6,191-1,205.46

Finding the Fourth Proportional to 4,128.14, 6,191 and 1,205.46

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Solution

The fourth proportional to 4,128.14, 6,191 and 1,205.46 is: 1,807.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.14 : 6,191 = 1,205.46 : x
  2. Step 2: Convert to fraction form
    4,128.14/6,191 = 1,205.46/x
  3. Step 3: Cross multiply
    4,128.14x = 6,191 × 1,205.46
  4. Step 4: Simplify right side
    4,128.14x = 7,463,002.86
  5. Step 5: Solve for x
    x = 7,463,002.86/4,128.14
  6. Step 6: Final answer
    x = 1,807.84

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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.