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Finding the Fourth Proportional to 8,216.62, 12,246.86 and 7,749.60

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Solution

The fourth proportional to 8,216.62, 12,246.86 and 7,749.60 is: 11,550.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,216.62 : 12,246.86 = 7,749.60 : x
  2. Step 2: Convert to fraction form
    8,216.62/12,246.86 = 7,749.60/x
  3. Step 3: Cross multiply
    8,216.62x = 12,246.86 × 7,749.60
  4. Step 4: Simplify right side
    8,216.62x = 94,908,266.26
  5. Step 5: Solve for x
    x = 94,908,266.26/8,216.62
  6. Step 6: Final answer
    x = 11,550.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.