Home / 1,918.37-2,645.40-1,806.75

Finding the Fourth Proportional to 1,918.37, 2,645.40 and 1,806.75

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Solution

The fourth proportional to 1,918.37, 2,645.40 and 1,806.75 is: 2,491.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.37 : 2,645.40 = 1,806.75 : x
  2. Step 2: Convert to fraction form
    1,918.37/2,645.40 = 1,806.75/x
  3. Step 3: Cross multiply
    1,918.37x = 2,645.40 × 1,806.75
  4. Step 4: Simplify right side
    1,918.37x = 4,779,576.45
  5. Step 5: Solve for x
    x = 4,779,576.45/1,918.37
  6. Step 6: Final answer
    x = 2,491.48

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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.