Home / 1,768.05-2,653.34-1,425.51

Finding the Fourth Proportional to 1,768.05, 2,653.34 and 1,425.51

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Solution

The fourth proportional to 1,768.05, 2,653.34 and 1,425.51 is: 2,139.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.05 : 2,653.34 = 1,425.51 : x
  2. Step 2: Convert to fraction form
    1,768.05/2,653.34 = 1,425.51/x
  3. Step 3: Cross multiply
    1,768.05x = 2,653.34 × 1,425.51
  4. Step 4: Simplify right side
    1,768.05x = 3,782,355.58
  5. Step 5: Solve for x
    x = 3,782,355.58/1,768.05
  6. Step 6: Final answer
    x = 2,139.28

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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.