Home / 1,938.42-2,910.33-1,205.64

Finding the Fourth Proportional to 1,938.42, 2,910.33 and 1,205.64

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Solution

The fourth proportional to 1,938.42, 2,910.33 and 1,205.64 is: 1,810.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.42 : 2,910.33 = 1,205.64 : x
  2. Step 2: Convert to fraction form
    1,938.42/2,910.33 = 1,205.64/x
  3. Step 3: Cross multiply
    1,938.42x = 2,910.33 × 1,205.64
  4. Step 4: Simplify right side
    1,938.42x = 3,508,810.26
  5. Step 5: Solve for x
    x = 3,508,810.26/1,938.42
  6. Step 6: Final answer
    x = 1,810.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.