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Finding the Fourth Proportional to 6,720.79, 9,274.27 and 3,736.57

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Solution

The fourth proportional to 6,720.79, 9,274.27 and 3,736.57 is: 5,156.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.79 : 9,274.27 = 3,736.57 : x
  2. Step 2: Convert to fraction form
    6,720.79/9,274.27 = 3,736.57/x
  3. Step 3: Cross multiply
    6,720.79x = 9,274.27 × 3,736.57
  4. Step 4: Simplify right side
    6,720.79x = 34,653,940.37
  5. Step 5: Solve for x
    x = 34,653,940.37/6,720.79
  6. Step 6: Final answer
    x = 5,156.23

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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.