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Finding the Fourth Proportional to 2,616.42, 3,924.63 and 885

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Solution

The fourth proportional to 2,616.42, 3,924.63 and 885 is: 1,327.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.42 : 3,924.63 = 885 : x
  2. Step 2: Convert to fraction form
    2,616.42/3,924.63 = 885/x
  3. Step 3: Cross multiply
    2,616.42x = 3,924.63 × 885
  4. Step 4: Simplify right side
    2,616.42x = 3,473,297.55
  5. Step 5: Solve for x
    x = 3,473,297.55/2,616.42
  6. Step 6: Final answer
    x = 1,327.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,617.42, 3,926.13 and 886
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.