Home / 2,811.08-3,878.88-1,763.48

Finding the Fourth Proportional to 2,811.08, 3,878.88 and 1,763.48

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Solution

The fourth proportional to 2,811.08, 3,878.88 and 1,763.48 is: 2,433.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.08 : 3,878.88 = 1,763.48 : x
  2. Step 2: Convert to fraction form
    2,811.08/3,878.88 = 1,763.48/x
  3. Step 3: Cross multiply
    2,811.08x = 3,878.88 × 1,763.48
  4. Step 4: Simplify right side
    2,811.08x = 6,840,327.30
  5. Step 5: Solve for x
    x = 6,840,327.30/2,811.08
  6. Step 6: Final answer
    x = 2,433.34

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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.