Home / 2,161.53-2,982.51-1,277.40

Finding the Fourth Proportional to 2,161.53, 2,982.51 and 1,277.40

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Solution

The fourth proportional to 2,161.53, 2,982.51 and 1,277.40 is: 1,762.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.53 : 2,982.51 = 1,277.40 : x
  2. Step 2: Convert to fraction form
    2,161.53/2,982.51 = 1,277.40/x
  3. Step 3: Cross multiply
    2,161.53x = 2,982.51 × 1,277.40
  4. Step 4: Simplify right side
    2,161.53x = 3,809,858.27
  5. Step 5: Solve for x
    x = 3,809,858.27/2,161.53
  6. Step 6: Final answer
    x = 1,762.57

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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.