Home / 2,151.90-2,969.87-1,268.60

Finding the Fourth Proportional to 2,151.90, 2,969.87 and 1,268.60

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Solution

The fourth proportional to 2,151.90, 2,969.87 and 1,268.60 is: 1,750.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.90 : 2,969.87 = 1,268.60 : x
  2. Step 2: Convert to fraction form
    2,151.90/2,969.87 = 1,268.60/x
  3. Step 3: Cross multiply
    2,151.90x = 2,969.87 × 1,268.60
  4. Step 4: Simplify right side
    2,151.90x = 3,767,555.89
  5. Step 5: Solve for x
    x = 3,767,555.89/2,151.90
  6. Step 6: Final answer
    x = 1,750.80

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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.