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Finding the Fourth Proportional to 8,400.36, 12,601.62 and 7,817.16

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Solution

The fourth proportional to 8,400.36, 12,601.62 and 7,817.16 is: 11,726.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.36 : 12,601.62 = 7,817.16 : x
  2. Step 2: Convert to fraction form
    8,400.36/12,601.62 = 7,817.16/x
  3. Step 3: Cross multiply
    8,400.36x = 12,601.62 × 7,817.16
  4. Step 4: Simplify right side
    8,400.36x = 98,508,879.80
  5. Step 5: Solve for x
    x = 98,508,879.80/8,400.36
  6. Step 6: Final answer
    x = 11,726.75

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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.