Home / 5,981.40-8,971.79-1,821.31

Finding the Fourth Proportional to 5,981.40, 8,971.79 and 1,821.31

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Solution

The fourth proportional to 5,981.40, 8,971.79 and 1,821.31 is: 2,731.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,981.40 : 8,971.79 = 1,821.31 : x
  2. Step 2: Convert to fraction form
    5,981.40/8,971.79 = 1,821.31/x
  3. Step 3: Cross multiply
    5,981.40x = 8,971.79 × 1,821.31
  4. Step 4: Simplify right side
    5,981.40x = 16,340,379.31
  5. Step 5: Solve for x
    x = 16,340,379.31/5,981.40
  6. Step 6: Final answer
    x = 2,731.87

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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.