Home / 2,153.12-2,971.36-1,268.96

Finding the Fourth Proportional to 2,153.12, 2,971.36 and 1,268.96

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Solution

The fourth proportional to 2,153.12, 2,971.36 and 1,268.96 is: 1,751.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.12 : 2,971.36 = 1,268.96 : x
  2. Step 2: Convert to fraction form
    2,153.12/2,971.36 = 1,268.96/x
  3. Step 3: Cross multiply
    2,153.12x = 2,971.36 × 1,268.96
  4. Step 4: Simplify right side
    2,153.12x = 3,770,536.99
  5. Step 5: Solve for x
    x = 3,770,536.99/2,153.12
  6. Step 6: Final answer
    x = 1,751.20

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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.