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Finding the Fourth Proportional to 2,954.29, 4,431.84 and 874.46

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Solution

The fourth proportional to 2,954.29, 4,431.84 and 874.46 is: 1,311.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,954.29 : 4,431.84 = 874.46 : x
  2. Step 2: Convert to fraction form
    2,954.29/4,431.84 = 874.46/x
  3. Step 3: Cross multiply
    2,954.29x = 4,431.84 × 874.46
  4. Step 4: Simplify right side
    2,954.29x = 3,875,466.81
  5. Step 5: Solve for x
    x = 3,875,466.81/2,954.29
  6. Step 6: Final answer
    x = 1,311.81

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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.