Home / 2,175.99-3,002.87-1,231.77

Finding the Fourth Proportional to 2,175.99, 3,002.87 and 1,231.77

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Solution

The fourth proportional to 2,175.99, 3,002.87 and 1,231.77 is: 1,699.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.99 : 3,002.87 = 1,231.77 : x
  2. Step 2: Convert to fraction form
    2,175.99/3,002.87 = 1,231.77/x
  3. Step 3: Cross multiply
    2,175.99x = 3,002.87 × 1,231.77
  4. Step 4: Simplify right side
    2,175.99x = 3,698,845.18
  5. Step 5: Solve for x
    x = 3,698,845.18/2,175.99
  6. Step 6: Final answer
    x = 1,699.84

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1.5x scale

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.