Home / 1,638.56-2,260.58-1,079.33

Finding the Fourth Proportional to 1,638.56, 2,260.58 and 1,079.33

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Solution

The fourth proportional to 1,638.56, 2,260.58 and 1,079.33 is: 1,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.56 : 2,260.58 = 1,079.33 : x
  2. Step 2: Convert to fraction form
    1,638.56/2,260.58 = 1,079.33/x
  3. Step 3: Cross multiply
    1,638.56x = 2,260.58 × 1,079.33
  4. Step 4: Simplify right side
    1,638.56x = 2,439,895.11
  5. Step 5: Solve for x
    x = 2,439,895.11/1,638.56
  6. Step 6: Final answer
    x = 1,489.05

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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.