Home / 6,485.54-9,729.72-2,102.90

Finding the Fourth Proportional to 6,485.54, 9,729.72 and 2,102.90

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Solution

The fourth proportional to 6,485.54, 9,729.72 and 2,102.90 is: 3,154.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.54 : 9,729.72 = 2,102.90 : x
  2. Step 2: Convert to fraction form
    6,485.54/9,729.72 = 2,102.90/x
  3. Step 3: Cross multiply
    6,485.54x = 9,729.72 × 2,102.90
  4. Step 4: Simplify right side
    6,485.54x = 20,460,579.54
  5. Step 5: Solve for x
    x = 20,460,579.54/6,485.54
  6. Step 6: Final answer
    x = 3,154.80

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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.