Home / 1,860.99-2,568.20-1,021.78

Finding the Fourth Proportional to 1,860.99, 2,568.20 and 1,021.78

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Solution

The fourth proportional to 1,860.99, 2,568.20 and 1,021.78 is: 1,410.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.99 : 2,568.20 = 1,021.78 : x
  2. Step 2: Convert to fraction form
    1,860.99/2,568.20 = 1,021.78/x
  3. Step 3: Cross multiply
    1,860.99x = 2,568.20 × 1,021.78
  4. Step 4: Simplify right side
    1,860.99x = 2,624,122.56
  5. Step 5: Solve for x
    x = 2,624,122.56/1,860.99
  6. Step 6: Final answer
    x = 1,410.07

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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.