Home / 2,725.50-3,762.68-1,919.19

Finding the Fourth Proportional to 2,725.50, 3,762.68 and 1,919.19

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Solution

The fourth proportional to 2,725.50, 3,762.68 and 1,919.19 is: 2,649.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,725.50 : 3,762.68 = 1,919.19 : x
  2. Step 2: Convert to fraction form
    2,725.50/3,762.68 = 1,919.19/x
  3. Step 3: Cross multiply
    2,725.50x = 3,762.68 × 1,919.19
  4. Step 4: Simplify right side
    2,725.50x = 7,221,288.23
  5. Step 5: Solve for x
    x = 7,221,288.23/2,725.50
  6. Step 6: Final answer
    x = 2,649.53

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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.