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Finding the Fourth Proportional to 8,415.66, 12,623.56 and 2,572.38

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Solution

The fourth proportional to 8,415.66, 12,623.56 and 2,572.38 is: 3,858.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.66 : 12,623.56 = 2,572.38 : x
  2. Step 2: Convert to fraction form
    8,415.66/12,623.56 = 2,572.38/x
  3. Step 3: Cross multiply
    8,415.66x = 12,623.56 × 2,572.38
  4. Step 4: Simplify right side
    8,415.66x = 32,472,593.27
  5. Step 5: Solve for x
    x = 32,472,593.27/8,415.66
  6. Step 6: Final answer
    x = 3,858.59

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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.