Home / 2,757.60-4,131.54-1,890.18

Finding the Fourth Proportional to 2,757.60, 4,131.54 and 1,890.18

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Solution

The fourth proportional to 2,757.60, 4,131.54 and 1,890.18 is: 2,831.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.60 : 4,131.54 = 1,890.18 : x
  2. Step 2: Convert to fraction form
    2,757.60/4,131.54 = 1,890.18/x
  3. Step 3: Cross multiply
    2,757.60x = 4,131.54 × 1,890.18
  4. Step 4: Simplify right side
    2,757.60x = 7,809,354.28
  5. Step 5: Solve for x
    x = 7,809,354.28/2,757.60
  6. Step 6: Final answer
    x = 2,831.94

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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.