Home / 3,119.90-4,674.45-1,964.30

Finding the Fourth Proportional to 3,119.90, 4,674.45 and 1,964.30

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Solution

The fourth proportional to 3,119.90, 4,674.45 and 1,964.30 is: 2,943.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.90 : 4,674.45 = 1,964.30 : x
  2. Step 2: Convert to fraction form
    3,119.90/4,674.45 = 1,964.30/x
  3. Step 3: Cross multiply
    3,119.90x = 4,674.45 × 1,964.30
  4. Step 4: Simplify right side
    3,119.90x = 9,182,022.14
  5. Step 5: Solve for x
    x = 9,182,022.14/3,119.90
  6. Step 6: Final answer
    x = 2,943.05

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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.