Home / 2,028.61-3,040.85-1,288.77

Finding the Fourth Proportional to 2,028.61, 3,040.85 and 1,288.77

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Solution

The fourth proportional to 2,028.61, 3,040.85 and 1,288.77 is: 1,931.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.61 : 3,040.85 = 1,288.77 : x
  2. Step 2: Convert to fraction form
    2,028.61/3,040.85 = 1,288.77/x
  3. Step 3: Cross multiply
    2,028.61x = 3,040.85 × 1,288.77
  4. Step 4: Simplify right side
    2,028.61x = 3,918,948.07
  5. Step 5: Solve for x
    x = 3,918,948.07/2,028.61
  6. Step 6: Final answer
    x = 1,931.84

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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.