Home / 3,985.10-5,977.44-1,211.71

Finding the Fourth Proportional to 3,985.10, 5,977.44 and 1,211.71

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Solution

The fourth proportional to 3,985.10, 5,977.44 and 1,211.71 is: 1,817.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.10 : 5,977.44 = 1,211.71 : x
  2. Step 2: Convert to fraction form
    3,985.10/5,977.44 = 1,211.71/x
  3. Step 3: Cross multiply
    3,985.10x = 5,977.44 × 1,211.71
  4. Step 4: Simplify right side
    3,985.10x = 7,242,887.88
  5. Step 5: Solve for x
    x = 7,242,887.88/3,985.10
  6. Step 6: Final answer
    x = 1,817.49

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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.