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Finding the Fourth Proportional to 8,388.04, 12,579.18 and 2,840.12

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Solution

The fourth proportional to 8,388.04, 12,579.18 and 2,840.12 is: 4,259.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,388.04 : 12,579.18 = 2,840.12 : x
  2. Step 2: Convert to fraction form
    8,388.04/12,579.18 = 2,840.12/x
  3. Step 3: Cross multiply
    8,388.04x = 12,579.18 × 2,840.12
  4. Step 4: Simplify right side
    8,388.04x = 35,726,380.70
  5. Step 5: Solve for x
    x = 35,726,380.70/8,388.04
  6. Step 6: Final answer
    x = 4,259.20

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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.