Home / 3,189.64-4,401.28-1,930.36

Finding the Fourth Proportional to 3,189.64, 4,401.28 and 1,930.36

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Solution

The fourth proportional to 3,189.64, 4,401.28 and 1,930.36 is: 2,663.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.64 : 4,401.28 = 1,930.36 : x
  2. Step 2: Convert to fraction form
    3,189.64/4,401.28 = 1,930.36/x
  3. Step 3: Cross multiply
    3,189.64x = 4,401.28 × 1,930.36
  4. Step 4: Simplify right side
    3,189.64x = 8,496,054.86
  5. Step 5: Solve for x
    x = 8,496,054.86/3,189.64
  6. Step 6: Final answer
    x = 2,663.64

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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.