Home / 2,161.36-2,982.24-1,277.28

Finding the Fourth Proportional to 2,161.36, 2,982.24 and 1,277.28

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Solution

The fourth proportional to 2,161.36, 2,982.24 and 1,277.28 is: 1,762.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.36 : 2,982.24 = 1,277.28 : x
  2. Step 2: Convert to fraction form
    2,161.36/2,982.24 = 1,277.28/x
  3. Step 3: Cross multiply
    2,161.36x = 2,982.24 × 1,277.28
  4. Step 4: Simplify right side
    2,161.36x = 3,809,155.51
  5. Step 5: Solve for x
    x = 3,809,155.51/2,161.36
  6. Step 6: Final answer
    x = 1,762.39

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1.5x scale

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.