Home / 2,986.08-4,120.08-1,938

Finding the Fourth Proportional to 2,986.08, 4,120.08 and 1,938

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Solution

The fourth proportional to 2,986.08, 4,120.08 and 1,938 is: 2,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.08 : 4,120.08 = 1,938 : x
  2. Step 2: Convert to fraction form
    2,986.08/4,120.08 = 1,938/x
  3. Step 3: Cross multiply
    2,986.08x = 4,120.08 × 1,938
  4. Step 4: Simplify right side
    2,986.08x = 7,984,715.04
  5. Step 5: Solve for x
    x = 7,984,715.04/2,986.08
  6. Step 6: Final answer
    x = 2,673.98

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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.