Home / 3,000.85-4,139.20-1,822.60

Finding the Fourth Proportional to 3,000.85, 4,139.20 and 1,822.60

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Solution

The fourth proportional to 3,000.85, 4,139.20 and 1,822.60 is: 2,513.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000.85 : 4,139.20 = 1,822.60 : x
  2. Step 2: Convert to fraction form
    3,000.85/4,139.20 = 1,822.60/x
  3. Step 3: Cross multiply
    3,000.85x = 4,139.20 × 1,822.60
  4. Step 4: Simplify right side
    3,000.85x = 7,544,113.37
  5. Step 5: Solve for x
    x = 7,544,113.37/3,000.85
  6. Step 6: Final answer
    x = 2,513.99

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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.