Home / 7,943.43-10,939.73-7,771.23

Finding the Fourth Proportional to 7,943.43, 10,939.73 and 7,771.23

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Solution

The fourth proportional to 7,943.43, 10,939.73 and 7,771.23 is: 10,702.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.43 : 10,939.73 = 7,771.23 : x
  2. Step 2: Convert to fraction form
    7,943.43/10,939.73 = 7,771.23/x
  3. Step 3: Cross multiply
    7,943.43x = 10,939.73 × 7,771.23
  4. Step 4: Simplify right side
    7,943.43x = 85,015,157.97
  5. Step 5: Solve for x
    x = 85,015,157.97/7,943.43
  6. Step 6: Final answer
    x = 10,702.58

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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.