Home / 3,131.72-4,697.66-1,051.80

Finding the Fourth Proportional to 3,131.72, 4,697.66 and 1,051.80

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Solution

The fourth proportional to 3,131.72, 4,697.66 and 1,051.80 is: 1,577.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.72 : 4,697.66 = 1,051.80 : x
  2. Step 2: Convert to fraction form
    3,131.72/4,697.66 = 1,051.80/x
  3. Step 3: Cross multiply
    3,131.72x = 4,697.66 × 1,051.80
  4. Step 4: Simplify right side
    3,131.72x = 4,940,983.80
  5. Step 5: Solve for x
    x = 4,940,983.80/3,131.72
  6. Step 6: Final answer
    x = 1,577.72

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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.