Home / 4,162.20-6,243.56-1,389.12

Finding the Fourth Proportional to 4,162.20, 6,243.56 and 1,389.12

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Solution

The fourth proportional to 4,162.20, 6,243.56 and 1,389.12 is: 2,083.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,162.20 : 6,243.56 = 1,389.12 : x
  2. Step 2: Convert to fraction form
    4,162.20/6,243.56 = 1,389.12/x
  3. Step 3: Cross multiply
    4,162.20x = 6,243.56 × 1,389.12
  4. Step 4: Simplify right side
    4,162.20x = 8,673,054.07
  5. Step 5: Solve for x
    x = 8,673,054.07/4,162.20
  6. Step 6: Final answer
    x = 2,083.77

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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.