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Finding the Fourth Proportional to 6,626.86, 9,145.86 and 3,974.18

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Solution

The fourth proportional to 6,626.86, 9,145.86 and 3,974.18 is: 5,484.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,626.86 : 9,145.86 = 3,974.18 : x
  2. Step 2: Convert to fraction form
    6,626.86/9,145.86 = 3,974.18/x
  3. Step 3: Cross multiply
    6,626.86x = 9,145.86 × 3,974.18
  4. Step 4: Simplify right side
    6,626.86x = 36,347,293.89
  5. Step 5: Solve for x
    x = 36,347,293.89/6,626.86
  6. Step 6: Final answer
    x = 5,484.84

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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.