Home / 3,980.50-5,971.18-1,349.90

Finding the Fourth Proportional to 3,980.50, 5,971.18 and 1,349.90

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Solution

The fourth proportional to 3,980.50, 5,971.18 and 1,349.90 is: 2,025.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.50 : 5,971.18 = 1,349.90 : x
  2. Step 2: Convert to fraction form
    3,980.50/5,971.18 = 1,349.90/x
  3. Step 3: Cross multiply
    3,980.50x = 5,971.18 × 1,349.90
  4. Step 4: Simplify right side
    3,980.50x = 8,060,495.88
  5. Step 5: Solve for x
    x = 8,060,495.88/3,980.50
  6. Step 6: Final answer
    x = 2,025.00

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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.