Home / 1,905.80-2,629.19-1,159.63

Finding the Fourth Proportional to 1,905.80, 2,629.19 and 1,159.63

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Solution

The fourth proportional to 1,905.80, 2,629.19 and 1,159.63 is: 1,599.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.80 : 2,629.19 = 1,159.63 : x
  2. Step 2: Convert to fraction form
    1,905.80/2,629.19 = 1,159.63/x
  3. Step 3: Cross multiply
    1,905.80x = 2,629.19 × 1,159.63
  4. Step 4: Simplify right side
    1,905.80x = 3,048,883.93
  5. Step 5: Solve for x
    x = 3,048,883.93/1,905.80
  6. Step 6: Final answer
    x = 1,599.80

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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.