Home / 3,189.77-4,400.72-1,930.37

Finding the Fourth Proportional to 3,189.77, 4,400.72 and 1,930.37

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Solution

The fourth proportional to 3,189.77, 4,400.72 and 1,930.37 is: 2,663.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.77 : 4,400.72 = 1,930.37 : x
  2. Step 2: Convert to fraction form
    3,189.77/4,400.72 = 1,930.37/x
  3. Step 3: Cross multiply
    3,189.77x = 4,400.72 × 1,930.37
  4. Step 4: Simplify right side
    3,189.77x = 8,495,021.90
  5. Step 5: Solve for x
    x = 8,495,021.90/3,189.77
  6. Step 6: Final answer
    x = 2,663.20

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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.