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Finding the Fourth Proportional to 6,626.40, 9,961.20 and 6,237.60

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Solution

The fourth proportional to 6,626.40, 9,961.20 and 6,237.60 is: 9,376.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,626.40 : 9,961.20 = 6,237.60 : x
  2. Step 2: Convert to fraction form
    6,626.40/9,961.20 = 6,237.60/x
  3. Step 3: Cross multiply
    6,626.40x = 9,961.20 × 6,237.60
  4. Step 4: Simplify right side
    6,626.40x = 62,133,981.12
  5. Step 5: Solve for x
    x = 62,133,981.12/6,626.40
  6. Step 6: Final answer
    x = 9,376.73

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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.