Home / 3,395.39-5,090.72-1,640.32

Finding the Fourth Proportional to 3,395.39, 5,090.72 and 1,640.32

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Solution

The fourth proportional to 3,395.39, 5,090.72 and 1,640.32 is: 2,459.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,395.39 : 5,090.72 = 1,640.32 : x
  2. Step 2: Convert to fraction form
    3,395.39/5,090.72 = 1,640.32/x
  3. Step 3: Cross multiply
    3,395.39x = 5,090.72 × 1,640.32
  4. Step 4: Simplify right side
    3,395.39x = 8,350,388.90
  5. Step 5: Solve for x
    x = 8,350,388.90/3,395.39
  6. Step 6: Final answer
    x = 2,459.33

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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.