Home / 3,347.78-4,620.03-2,021.72

Finding the Fourth Proportional to 3,347.78, 4,620.03 and 2,021.72

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Solution

The fourth proportional to 3,347.78, 4,620.03 and 2,021.72 is: 2,790.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,347.78 : 4,620.03 = 2,021.72 : x
  2. Step 2: Convert to fraction form
    3,347.78/4,620.03 = 2,021.72/x
  3. Step 3: Cross multiply
    3,347.78x = 4,620.03 × 2,021.72
  4. Step 4: Simplify right side
    3,347.78x = 9,340,407.05
  5. Step 5: Solve for x
    x = 9,340,407.05/3,347.78
  6. Step 6: Final answer
    x = 2,790.03

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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.