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Finding the Fourth Proportional to 8,263.88, 12,395.83 and 2,420.49

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Solution

The fourth proportional to 8,263.88, 12,395.83 and 2,420.49 is: 3,630.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,263.88 : 12,395.83 = 2,420.49 : x
  2. Step 2: Convert to fraction form
    8,263.88/12,395.83 = 2,420.49/x
  3. Step 3: Cross multiply
    8,263.88x = 12,395.83 × 2,420.49
  4. Step 4: Simplify right side
    8,263.88x = 30,003,976.51
  5. Step 5: Solve for x
    x = 30,003,976.51/8,263.88
  6. Step 6: Final answer
    x = 3,630.74

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Half scale
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Double scale
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Similar ratio
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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.