Home / 3,180.24-4,389.35-1,921.50

Finding the Fourth Proportional to 3,180.24, 4,389.35 and 1,921.50

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Solution

The fourth proportional to 3,180.24, 4,389.35 and 1,921.50 is: 2,652.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.24 : 4,389.35 = 1,921.50 : x
  2. Step 2: Convert to fraction form
    3,180.24/4,389.35 = 1,921.50/x
  3. Step 3: Cross multiply
    3,180.24x = 4,389.35 × 1,921.50
  4. Step 4: Simplify right side
    3,180.24x = 8,434,109.96
  5. Step 5: Solve for x
    x = 8,434,109.96/3,180.24
  6. Step 6: Final answer
    x = 2,652.04

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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.