Home / 2,172.26-3,256.46-785.29

Finding the Fourth Proportional to 2,172.26, 3,256.46 and 785.29

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Solution

The fourth proportional to 2,172.26, 3,256.46 and 785.29 is: 1,177.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.26 : 3,256.46 = 785.29 : x
  2. Step 2: Convert to fraction form
    2,172.26/3,256.46 = 785.29/x
  3. Step 3: Cross multiply
    2,172.26x = 3,256.46 × 785.29
  4. Step 4: Simplify right side
    2,172.26x = 2,557,261.55
  5. Step 5: Solve for x
    x = 2,557,261.55/2,172.26
  6. Step 6: Final answer
    x = 1,177.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.