Home / 3,163.28-4,365.23-1,985.00

Finding the Fourth Proportional to 3,163.28, 4,365.23 and 1,985.00

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Solution

The fourth proportional to 3,163.28, 4,365.23 and 1,985.00 is: 2,739.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.28 : 4,365.23 = 1,985.00 : x
  2. Step 2: Convert to fraction form
    3,163.28/4,365.23 = 1,985.00/x
  3. Step 3: Cross multiply
    3,163.28x = 4,365.23 × 1,985.00
  4. Step 4: Simplify right side
    3,163.28x = 8,664,949.80
  5. Step 5: Solve for x
    x = 8,664,949.80/3,163.28
  6. Step 6: Final answer
    x = 2,739.23

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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.