Home / 2,128.75-2,937.69-1,197.25

Finding the Fourth Proportional to 2,128.75, 2,937.69 and 1,197.25

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Solution

The fourth proportional to 2,128.75, 2,937.69 and 1,197.25 is: 1,652.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.75 : 2,937.69 = 1,197.25 : x
  2. Step 2: Convert to fraction form
    2,128.75/2,937.69 = 1,197.25/x
  3. Step 3: Cross multiply
    2,128.75x = 2,937.69 × 1,197.25
  4. Step 4: Simplify right side
    2,128.75x = 3,517,149.35
  5. Step 5: Solve for x
    x = 3,517,149.35/2,128.75
  6. Step 6: Final answer
    x = 1,652.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.