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Finding the Fourth Proportional to 2,379.89, 3,285.87 and 1,484

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Solution

The fourth proportional to 2,379.89, 3,285.87 and 1,484 is: 2,048.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.89 : 3,285.87 = 1,484 : x
  2. Step 2: Convert to fraction form
    2,379.89/3,285.87 = 1,484/x
  3. Step 3: Cross multiply
    2,379.89x = 3,285.87 × 1,484
  4. Step 4: Simplify right side
    2,379.89x = 4,876,231.08
  5. Step 5: Solve for x
    x = 4,876,231.08/2,379.89
  6. Step 6: Final answer
    x = 2,048.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.