Home / 2,918.80-4,032.33-1,912.89

Finding the Fourth Proportional to 2,918.80, 4,032.33 and 1,912.89

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Solution

The fourth proportional to 2,918.80, 4,032.33 and 1,912.89 is: 2,642.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.80 : 4,032.33 = 1,912.89 : x
  2. Step 2: Convert to fraction form
    2,918.80/4,032.33 = 1,912.89/x
  3. Step 3: Cross multiply
    2,918.80x = 4,032.33 × 1,912.89
  4. Step 4: Simplify right side
    2,918.80x = 7,713,394.17
  5. Step 5: Solve for x
    x = 7,713,394.17/2,918.80
  6. Step 6: Final answer
    x = 2,642.66

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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.