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Finding the Fourth Proportional to 6,874.40, 10,311.60 and 3,954.08

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Solution

The fourth proportional to 6,874.40, 10,311.60 and 3,954.08 is: 5,931.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,874.40 : 10,311.60 = 3,954.08 : x
  2. Step 2: Convert to fraction form
    6,874.40/10,311.60 = 3,954.08/x
  3. Step 3: Cross multiply
    6,874.40x = 10,311.60 × 3,954.08
  4. Step 4: Simplify right side
    6,874.40x = 40,772,891.33
  5. Step 5: Solve for x
    x = 40,772,891.33/6,874.40
  6. Step 6: Final answer
    x = 5,931.12

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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.