Home / 3,281.78-4,525.26-2,161.28

Finding the Fourth Proportional to 3,281.78, 4,525.26 and 2,161.28

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Solution

The fourth proportional to 3,281.78, 4,525.26 and 2,161.28 is: 2,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.78 : 4,525.26 = 2,161.28 : x
  2. Step 2: Convert to fraction form
    3,281.78/4,525.26 = 2,161.28/x
  3. Step 3: Cross multiply
    3,281.78x = 4,525.26 × 2,161.28
  4. Step 4: Simplify right side
    3,281.78x = 9,780,353.93
  5. Step 5: Solve for x
    x = 9,780,353.93/3,281.78
  6. Step 6: Final answer
    x = 2,980.20

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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.