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Finding the Fourth Proportional to 7,618.08, 11,426.94 and 3,918.12

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Solution

The fourth proportional to 7,618.08, 11,426.94 and 3,918.12 is: 5,877.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,618.08 : 11,426.94 = 3,918.12 : x
  2. Step 2: Convert to fraction form
    7,618.08/11,426.94 = 3,918.12/x
  3. Step 3: Cross multiply
    7,618.08x = 11,426.94 × 3,918.12
  4. Step 4: Simplify right side
    7,618.08x = 44,772,122.15
  5. Step 5: Solve for x
    x = 44,772,122.15/7,618.08
  6. Step 6: Final answer
    x = 5,877.09

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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.