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Finding the Fourth Proportional to 2,885.16, 4,328.38 and 833

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Solution

The fourth proportional to 2,885.16, 4,328.38 and 833 is: 1,249.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.16 : 4,328.38 = 833 : x
  2. Step 2: Convert to fraction form
    2,885.16/4,328.38 = 833/x
  3. Step 3: Cross multiply
    2,885.16x = 4,328.38 × 833
  4. Step 4: Simplify right side
    2,885.16x = 3,605,540.54
  5. Step 5: Solve for x
    x = 3,605,540.54/2,885.16
  6. Step 6: Final answer
    x = 1,249.68

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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.