Home / 2,771.07-4,157.20-1,289.19

Finding the Fourth Proportional to 2,771.07, 4,157.20 and 1,289.19

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Solution

The fourth proportional to 2,771.07, 4,157.20 and 1,289.19 is: 1,934.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.07 : 4,157.20 = 1,289.19 : x
  2. Step 2: Convert to fraction form
    2,771.07/4,157.20 = 1,289.19/x
  3. Step 3: Cross multiply
    2,771.07x = 4,157.20 × 1,289.19
  4. Step 4: Simplify right side
    2,771.07x = 5,359,422.55
  5. Step 5: Solve for x
    x = 5,359,422.55/2,771.07
  6. Step 6: Final answer
    x = 1,934.06

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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.