Home / 2,902.08-4,021.20-2,864.64

Finding the Fourth Proportional to 2,902.08, 4,021.20 and 2,864.64

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Solution

The fourth proportional to 2,902.08, 4,021.20 and 2,864.64 is: 3,969.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,902.08 : 4,021.20 = 2,864.64 : x
  2. Step 2: Convert to fraction form
    2,902.08/4,021.20 = 2,864.64/x
  3. Step 3: Cross multiply
    2,902.08x = 4,021.20 × 2,864.64
  4. Step 4: Simplify right side
    2,902.08x = 11,519,290.37
  5. Step 5: Solve for x
    x = 11,519,290.37/2,902.08
  6. Step 6: Final answer
    x = 3,969.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.