Home / 2,119.37-3,179.25-803.12

Finding the Fourth Proportional to 2,119.37, 3,179.25 and 803.12

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Solution

The fourth proportional to 2,119.37, 3,179.25 and 803.12 is: 1,204.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.37 : 3,179.25 = 803.12 : x
  2. Step 2: Convert to fraction form
    2,119.37/3,179.25 = 803.12/x
  3. Step 3: Cross multiply
    2,119.37x = 3,179.25 × 803.12
  4. Step 4: Simplify right side
    2,119.37x = 2,553,303.36
  5. Step 5: Solve for x
    x = 2,553,303.36/2,119.37
  6. Step 6: Final answer
    x = 1,204.75

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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.