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Finding the Fourth Proportional to 8,415.88, 12,623.78 and 2,572.28

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Solution

The fourth proportional to 8,415.88, 12,623.78 and 2,572.28 is: 3,858.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.88 : 12,623.78 = 2,572.28 : x
  2. Step 2: Convert to fraction form
    8,415.88/12,623.78 = 2,572.28/x
  3. Step 3: Cross multiply
    8,415.88x = 12,623.78 × 2,572.28
  4. Step 4: Simplify right side
    8,415.88x = 32,471,896.82
  5. Step 5: Solve for x
    x = 32,471,896.82/8,415.88
  6. Step 6: Final answer
    x = 3,858.41

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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.