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Finding the Fourth Proportional to 7,086.78, 10,630.26 and 2,926.31

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Solution

The fourth proportional to 7,086.78, 10,630.26 and 2,926.31 is: 4,389.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,086.78 : 10,630.26 = 2,926.31 : x
  2. Step 2: Convert to fraction form
    7,086.78/10,630.26 = 2,926.31/x
  3. Step 3: Cross multiply
    7,086.78x = 10,630.26 × 2,926.31
  4. Step 4: Simplify right side
    7,086.78x = 31,107,382.99
  5. Step 5: Solve for x
    x = 31,107,382.99/7,086.78
  6. Step 6: Final answer
    x = 4,389.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.