Home / 3,395.64-4,685.40-1,998.12

Finding the Fourth Proportional to 3,395.64, 4,685.40 and 1,998.12

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Solution

The fourth proportional to 3,395.64, 4,685.40 and 1,998.12 is: 2,757.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,395.64 : 4,685.40 = 1,998.12 : x
  2. Step 2: Convert to fraction form
    3,395.64/4,685.40 = 1,998.12/x
  3. Step 3: Cross multiply
    3,395.64x = 4,685.40 × 1,998.12
  4. Step 4: Simplify right side
    3,395.64x = 9,361,991.45
  5. Step 5: Solve for x
    x = 9,361,991.45/3,395.64
  6. Step 6: Final answer
    x = 2,757.06

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,396.64, 4,686.78 and 1,999.12
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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.