Home / 2,788.21-3,846.85-2,081.08

Finding the Fourth Proportional to 2,788.21, 3,846.85 and 2,081.08

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Solution

The fourth proportional to 2,788.21, 3,846.85 and 2,081.08 is: 2,871.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.21 : 3,846.85 = 2,081.08 : x
  2. Step 2: Convert to fraction form
    2,788.21/3,846.85 = 2,081.08/x
  3. Step 3: Cross multiply
    2,788.21x = 3,846.85 × 2,081.08
  4. Step 4: Simplify right side
    2,788.21x = 8,005,602.60
  5. Step 5: Solve for x
    x = 8,005,602.60/2,788.21
  6. Step 6: Final answer
    x = 2,871.23

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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.