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Finding the Fourth Proportional to 7,926.09, 10,938 and 4,389.30

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Solution

The fourth proportional to 7,926.09, 10,938 and 4,389.30 is: 6,057.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,926.09 : 10,938 = 4,389.30 : x
  2. Step 2: Convert to fraction form
    7,926.09/10,938 = 4,389.30/x
  3. Step 3: Cross multiply
    7,926.09x = 10,938 × 4,389.30
  4. Step 4: Simplify right side
    7,926.09x = 48,010,163.40
  5. Step 5: Solve for x
    x = 48,010,163.40/7,926.09
  6. Step 6: Final answer
    x = 6,057.23

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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.