Home / 3,620.09-5,431.35-1,155.26

Finding the Fourth Proportional to 3,620.09, 5,431.35 and 1,155.26

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Solution

The fourth proportional to 3,620.09, 5,431.35 and 1,155.26 is: 1,733.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.09 : 5,431.35 = 1,155.26 : x
  2. Step 2: Convert to fraction form
    3,620.09/5,431.35 = 1,155.26/x
  3. Step 3: Cross multiply
    3,620.09x = 5,431.35 × 1,155.26
  4. Step 4: Simplify right side
    3,620.09x = 6,274,621.40
  5. Step 5: Solve for x
    x = 6,274,621.40/3,620.09
  6. Step 6: Final answer
    x = 1,733.28

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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.