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Finding the Fourth Proportional to 8,415.68, 12,623.58 and 2,572.29

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Solution

The fourth proportional to 8,415.68, 12,623.58 and 2,572.29 is: 3,858.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.68 : 12,623.58 = 2,572.29 : x
  2. Step 2: Convert to fraction form
    8,415.68/12,623.58 = 2,572.29/x
  3. Step 3: Cross multiply
    8,415.68x = 12,623.58 × 2,572.29
  4. Step 4: Simplify right side
    8,415.68x = 32,471,508.60
  5. Step 5: Solve for x
    x = 32,471,508.60/8,415.68
  6. Step 6: Final answer
    x = 3,858.45

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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.