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Finding the Fourth Proportional to 3,174.52, 4,779.01 and 2,857

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Solution

The fourth proportional to 3,174.52, 4,779.01 and 2,857 is: 4,301.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,174.52 : 4,779.01 = 2,857 : x
  2. Step 2: Convert to fraction form
    3,174.52/4,779.01 = 2,857/x
  3. Step 3: Cross multiply
    3,174.52x = 4,779.01 × 2,857
  4. Step 4: Simplify right side
    3,174.52x = 13,653,631.57
  5. Step 5: Solve for x
    x = 13,653,631.57/3,174.52
  6. Step 6: Final answer
    x = 4,301.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.