Home / 1,790.81-2,686.20-1,059.99

Finding the Fourth Proportional to 1,790.81, 2,686.20 and 1,059.99

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Solution

The fourth proportional to 1,790.81, 2,686.20 and 1,059.99 is: 1,589.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.81 : 2,686.20 = 1,059.99 : x
  2. Step 2: Convert to fraction form
    1,790.81/2,686.20 = 1,059.99/x
  3. Step 3: Cross multiply
    1,790.81x = 2,686.20 × 1,059.99
  4. Step 4: Simplify right side
    1,790.81x = 2,847,331.09
  5. Step 5: Solve for x
    x = 2,847,331.09/1,790.81
  6. Step 6: Final answer
    x = 1,589.97

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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.