Home / 2,911.55-4,015.58-1,790.48

Finding the Fourth Proportional to 2,911.55, 4,015.58 and 1,790.48

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Solution

The fourth proportional to 2,911.55, 4,015.58 and 1,790.48 is: 2,469.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.55 : 4,015.58 = 1,790.48 : x
  2. Step 2: Convert to fraction form
    2,911.55/4,015.58 = 1,790.48/x
  3. Step 3: Cross multiply
    2,911.55x = 4,015.58 × 1,790.48
  4. Step 4: Simplify right side
    2,911.55x = 7,189,816.76
  5. Step 5: Solve for x
    x = 7,189,816.76/2,911.55
  6. Step 6: Final answer
    x = 2,469.42

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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.