Home / 3,435.90-5,154.93-2,138.28

Finding the Fourth Proportional to 3,435.90, 5,154.93 and 2,138.28

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Solution

The fourth proportional to 3,435.90, 5,154.93 and 2,138.28 is: 3,208.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,435.90 : 5,154.93 = 2,138.28 : x
  2. Step 2: Convert to fraction form
    3,435.90/5,154.93 = 2,138.28/x
  3. Step 3: Cross multiply
    3,435.90x = 5,154.93 × 2,138.28
  4. Step 4: Simplify right side
    3,435.90x = 11,022,683.72
  5. Step 5: Solve for x
    x = 11,022,683.72/3,435.90
  6. Step 6: Final answer
    x = 3,208.09

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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.