Home / 4,989.27-7,485.30-2,178.36

Finding the Fourth Proportional to 4,989.27, 7,485.30 and 2,178.36

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Solution

The fourth proportional to 4,989.27, 7,485.30 and 2,178.36 is: 3,268.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.27 : 7,485.30 = 2,178.36 : x
  2. Step 2: Convert to fraction form
    4,989.27/7,485.30 = 2,178.36/x
  3. Step 3: Cross multiply
    4,989.27x = 7,485.30 × 2,178.36
  4. Step 4: Simplify right side
    4,989.27x = 16,305,678.11
  5. Step 5: Solve for x
    x = 16,305,678.11/4,989.27
  6. Step 6: Final answer
    x = 3,268.15

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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.