Home / 2,028.81-2,798.51-1,231.77

Finding the Fourth Proportional to 2,028.81, 2,798.51 and 1,231.77

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Solution

The fourth proportional to 2,028.81, 2,798.51 and 1,231.77 is: 1,699.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.81 : 2,798.51 = 1,231.77 : x
  2. Step 2: Convert to fraction form
    2,028.81/2,798.51 = 1,231.77/x
  3. Step 3: Cross multiply
    2,028.81x = 2,798.51 × 1,231.77
  4. Step 4: Simplify right side
    2,028.81x = 3,447,114.50
  5. Step 5: Solve for x
    x = 3,447,114.50/2,028.81
  6. Step 6: Final answer
    x = 1,699.08

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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.