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Finding the Fourth Proportional to 8,259, 12,388.52 and 2,415.68

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Solution

The fourth proportional to 8,259, 12,388.52 and 2,415.68 is: 3,623.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259 : 12,388.52 = 2,415.68 : x
  2. Step 2: Convert to fraction form
    8,259/12,388.52 = 2,415.68/x
  3. Step 3: Cross multiply
    8,259x = 12,388.52 × 2,415.68
  4. Step 4: Simplify right side
    8,259x = 29,926,699.99
  5. Step 5: Solve for x
    x = 29,926,699.99/8,259
  6. Step 6: Final answer
    x = 3,623.53

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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.