Home / 8,138.27-11,210.75-6,939.36

Finding the Fourth Proportional to 8,138.27, 11,210.75 and 6,939.36

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Solution

The fourth proportional to 8,138.27, 11,210.75 and 6,939.36 is: 9,559.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.27 : 11,210.75 = 6,939.36 : x
  2. Step 2: Convert to fraction form
    8,138.27/11,210.75 = 6,939.36/x
  3. Step 3: Cross multiply
    8,138.27x = 11,210.75 × 6,939.36
  4. Step 4: Simplify right side
    8,138.27x = 77,795,395.42
  5. Step 5: Solve for x
    x = 77,795,395.42/8,138.27
  6. Step 6: Final answer
    x = 9,559.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.