Home / 3,189.98-4,783.12-1,239.92

Finding the Fourth Proportional to 3,189.98, 4,783.12 and 1,239.92

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Solution

The fourth proportional to 3,189.98, 4,783.12 and 1,239.92 is: 1,859.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.98 : 4,783.12 = 1,239.92 : x
  2. Step 2: Convert to fraction form
    3,189.98/4,783.12 = 1,239.92/x
  3. Step 3: Cross multiply
    3,189.98x = 4,783.12 × 1,239.92
  4. Step 4: Simplify right side
    3,189.98x = 5,930,686.15
  5. Step 5: Solve for x
    x = 5,930,686.15/3,189.98
  6. Step 6: Final answer
    x = 1,859.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.