Home / 1,905.53-2,629.61-1,054.78

Finding the Fourth Proportional to 1,905.53, 2,629.61 and 1,054.78

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Solution

The fourth proportional to 1,905.53, 2,629.61 and 1,054.78 is: 1,455.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.53 : 2,629.61 = 1,054.78 : x
  2. Step 2: Convert to fraction form
    1,905.53/2,629.61 = 1,054.78/x
  3. Step 3: Cross multiply
    1,905.53x = 2,629.61 × 1,054.78
  4. Step 4: Simplify right side
    1,905.53x = 2,773,660.04
  5. Step 5: Solve for x
    x = 2,773,660.04/1,905.53
  6. Step 6: Final answer
    x = 1,455.58

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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.