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Finding the Fourth Proportional to 8,859.93, 12,219.43 and 6,467.22

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Solution

The fourth proportional to 8,859.93, 12,219.43 and 6,467.22 is: 8,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.93 : 12,219.43 = 6,467.22 : x
  2. Step 2: Convert to fraction form
    8,859.93/12,219.43 = 6,467.22/x
  3. Step 3: Cross multiply
    8,859.93x = 12,219.43 × 6,467.22
  4. Step 4: Simplify right side
    8,859.93x = 79,025,742.08
  5. Step 5: Solve for x
    x = 79,025,742.08/8,859.93
  6. Step 6: Final answer
    x = 8,919.45

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Half scale
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Double scale
Find fourth proportional to 8,860.93, 12,220.81 and 6,468.22
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.