Home / 2,028.80-3,041.84-931.68

Finding the Fourth Proportional to 2,028.80, 3,041.84 and 931.68

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Solution

The fourth proportional to 2,028.80, 3,041.84 and 931.68 is: 1,396.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.80 : 3,041.84 = 931.68 : x
  2. Step 2: Convert to fraction form
    2,028.80/3,041.84 = 931.68/x
  3. Step 3: Cross multiply
    2,028.80x = 3,041.84 × 931.68
  4. Step 4: Simplify right side
    2,028.80x = 2,834,021.49
  5. Step 5: Solve for x
    x = 2,834,021.49/2,028.80
  6. Step 6: Final answer
    x = 1,396.90

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1.5x scale

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.