Home / 2,763.90-4,119.60-2,553.21

Finding the Fourth Proportional to 2,763.90, 4,119.60 and 2,553.21

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Solution

The fourth proportional to 2,763.90, 4,119.60 and 2,553.21 is: 3,805.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,763.90 : 4,119.60 = 2,553.21 : x
  2. Step 2: Convert to fraction form
    2,763.90/4,119.60 = 2,553.21/x
  3. Step 3: Cross multiply
    2,763.90x = 4,119.60 × 2,553.21
  4. Step 4: Simplify right side
    2,763.90x = 10,518,203.92
  5. Step 5: Solve for x
    x = 10,518,203.92/2,763.90
  6. Step 6: Final answer
    x = 3,805.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.