Home / 7,821.24-11,702.44-5,485.81

Finding the Fourth Proportional to 7,821.24, 11,702.44 and 5,485.81

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Solution

The fourth proportional to 7,821.24, 11,702.44 and 5,485.81 is: 8,208.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.24 : 11,702.44 = 5,485.81 : x
  2. Step 2: Convert to fraction form
    7,821.24/11,702.44 = 5,485.81/x
  3. Step 3: Cross multiply
    7,821.24x = 11,702.44 × 5,485.81
  4. Step 4: Simplify right side
    7,821.24x = 64,197,361.92
  5. Step 5: Solve for x
    x = 64,197,361.92/7,821.24
  6. Step 6: Final answer
    x = 8,208.08

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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.