Home / 9,318.30-13,977.18-3,078.60

Finding the Fourth Proportional to 9,318.30, 13,977.18 and 3,078.60

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Solution

The fourth proportional to 9,318.30, 13,977.18 and 3,078.60 is: 4,617.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.30 : 13,977.18 = 3,078.60 : x
  2. Step 2: Convert to fraction form
    9,318.30/13,977.18 = 3,078.60/x
  3. Step 3: Cross multiply
    9,318.30x = 13,977.18 × 3,078.60
  4. Step 4: Simplify right side
    9,318.30x = 43,030,146.35
  5. Step 5: Solve for x
    x = 43,030,146.35/9,318.30
  6. Step 6: Final answer
    x = 4,617.81

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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.