Home / 5,129.15-7,693.73-1,431.39

Finding the Fourth Proportional to 5,129.15, 7,693.73 and 1,431.39

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Solution

The fourth proportional to 5,129.15, 7,693.73 and 1,431.39 is: 2,147.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.15 : 7,693.73 = 1,431.39 : x
  2. Step 2: Convert to fraction form
    5,129.15/7,693.73 = 1,431.39/x
  3. Step 3: Cross multiply
    5,129.15x = 7,693.73 × 1,431.39
  4. Step 4: Simplify right side
    5,129.15x = 11,012,728.18
  5. Step 5: Solve for x
    x = 11,012,728.18/5,129.15
  6. Step 6: Final answer
    x = 2,147.09

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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.