Home / 2,161.26-2,982.12-1,277.22

Finding the Fourth Proportional to 2,161.26, 2,982.12 and 1,277.22

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Solution

The fourth proportional to 2,161.26, 2,982.12 and 1,277.22 is: 1,762.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.26 : 2,982.12 = 1,277.22 : x
  2. Step 2: Convert to fraction form
    2,161.26/2,982.12 = 1,277.22/x
  3. Step 3: Cross multiply
    2,161.26x = 2,982.12 × 1,277.22
  4. Step 4: Simplify right side
    2,161.26x = 3,808,823.31
  5. Step 5: Solve for x
    x = 3,808,823.31/2,161.26
  6. Step 6: Final answer
    x = 1,762.32

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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.