Home / 3,816.90-5,725.80-1,219.50

Finding the Fourth Proportional to 3,816.90, 5,725.80 and 1,219.50

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Solution

The fourth proportional to 3,816.90, 5,725.80 and 1,219.50 is: 1,829.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,816.90 : 5,725.80 = 1,219.50 : x
  2. Step 2: Convert to fraction form
    3,816.90/5,725.80 = 1,219.50/x
  3. Step 3: Cross multiply
    3,816.90x = 5,725.80 × 1,219.50
  4. Step 4: Simplify right side
    3,816.90x = 6,982,613.10
  5. Step 5: Solve for x
    x = 6,982,613.10/3,816.90
  6. Step 6: Final answer
    x = 1,829.39

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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.