Home / 1,639.09-2,261.92-1,080.37

Finding the Fourth Proportional to 1,639.09, 2,261.92 and 1,080.37

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Solution

The fourth proportional to 1,639.09, 2,261.92 and 1,080.37 is: 1,490.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.09 : 2,261.92 = 1,080.37 : x
  2. Step 2: Convert to fraction form
    1,639.09/2,261.92 = 1,080.37/x
  3. Step 3: Cross multiply
    1,639.09x = 2,261.92 × 1,080.37
  4. Step 4: Simplify right side
    1,639.09x = 2,443,710.51
  5. Step 5: Solve for x
    x = 2,443,710.51/1,639.09
  6. Step 6: Final answer
    x = 1,490.89

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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.