Home / 8,121.49-11,182.67-6,923.80

Finding the Fourth Proportional to 8,121.49, 11,182.67 and 6,923.80

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Solution

The fourth proportional to 8,121.49, 11,182.67 and 6,923.80 is: 9,533.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.49 : 11,182.67 = 6,923.80 : x
  2. Step 2: Convert to fraction form
    8,121.49/11,182.67 = 6,923.80/x
  3. Step 3: Cross multiply
    8,121.49x = 11,182.67 × 6,923.80
  4. Step 4: Simplify right side
    8,121.49x = 77,426,575.87
  5. Step 5: Solve for x
    x = 77,426,575.87/8,121.49
  6. Step 6: Final answer
    x = 9,533.55

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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.