Home / 1,788.28-2,686.54-1,269.58

Finding the Fourth Proportional to 1,788.28, 2,686.54 and 1,269.58

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Solution

The fourth proportional to 1,788.28, 2,686.54 and 1,269.58 is: 1,907.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.28 : 2,686.54 = 1,269.58 : x
  2. Step 2: Convert to fraction form
    1,788.28/2,686.54 = 1,269.58/x
  3. Step 3: Cross multiply
    1,788.28x = 2,686.54 × 1,269.58
  4. Step 4: Simplify right side
    1,788.28x = 3,410,777.45
  5. Step 5: Solve for x
    x = 3,410,777.45/1,788.28
  6. Step 6: Final answer
    x = 1,907.29

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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.