Home / 1,790.38-2,685.55-1,429.53

Finding the Fourth Proportional to 1,790.38, 2,685.55 and 1,429.53

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Solution

The fourth proportional to 1,790.38, 2,685.55 and 1,429.53 is: 2,144.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.38 : 2,685.55 = 1,429.53 : x
  2. Step 2: Convert to fraction form
    1,790.38/2,685.55 = 1,429.53/x
  3. Step 3: Cross multiply
    1,790.38x = 2,685.55 × 1,429.53
  4. Step 4: Simplify right side
    1,790.38x = 3,839,074.29
  5. Step 5: Solve for x
    x = 3,839,074.29/1,790.38
  6. Step 6: Final answer
    x = 2,144.28

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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.