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Finding the Fourth Proportional to 2,576.90, 3,863.04 and 933.06

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Solution

The fourth proportional to 2,576.90, 3,863.04 and 933.06 is: 1,398.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,576.90 : 3,863.04 = 933.06 : x
  2. Step 2: Convert to fraction form
    2,576.90/3,863.04 = 933.06/x
  3. Step 3: Cross multiply
    2,576.90x = 3,863.04 × 933.06
  4. Step 4: Simplify right side
    2,576.90x = 3,604,448.10
  5. Step 5: Solve for x
    x = 3,604,448.10/2,576.90
  6. Step 6: Final answer
    x = 1,398.75

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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.