Home / 2,791.46-4,191.55-2,405.80

Finding the Fourth Proportional to 2,791.46, 4,191.55 and 2,405.80

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Solution

The fourth proportional to 2,791.46, 4,191.55 and 2,405.80 is: 3,612.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.46 : 4,191.55 = 2,405.80 : x
  2. Step 2: Convert to fraction form
    2,791.46/4,191.55 = 2,405.80/x
  3. Step 3: Cross multiply
    2,791.46x = 4,191.55 × 2,405.80
  4. Step 4: Simplify right side
    2,791.46x = 10,084,030.21
  5. Step 5: Solve for x
    x = 10,084,030.21/2,791.46
  6. Step 6: Final answer
    x = 3,612.45

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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.