Home / 3,119.58-4,303.28-1,999.24

Finding the Fourth Proportional to 3,119.58, 4,303.28 and 1,999.24

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Solution

The fourth proportional to 3,119.58, 4,303.28 and 1,999.24 is: 2,757.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.58 : 4,303.28 = 1,999.24 : x
  2. Step 2: Convert to fraction form
    3,119.58/4,303.28 = 1,999.24/x
  3. Step 3: Cross multiply
    3,119.58x = 4,303.28 × 1,999.24
  4. Step 4: Simplify right side
    3,119.58x = 8,603,283.75
  5. Step 5: Solve for x
    x = 8,603,283.75/3,119.58
  6. Step 6: Final answer
    x = 2,757.83

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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.