Home / 7,923.78-11,827.13-6,989.94

Finding the Fourth Proportional to 7,923.78, 11,827.13 and 6,989.94

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Solution

The fourth proportional to 7,923.78, 11,827.13 and 6,989.94 is: 10,433.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923.78 : 11,827.13 = 6,989.94 : x
  2. Step 2: Convert to fraction form
    7,923.78/11,827.13 = 6,989.94/x
  3. Step 3: Cross multiply
    7,923.78x = 11,827.13 × 6,989.94
  4. Step 4: Simplify right side
    7,923.78x = 82,670,894.12
  5. Step 5: Solve for x
    x = 82,670,894.12/7,923.78
  6. Step 6: Final answer
    x = 10,433.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.