Home / 3,326.40-4,989.60-2,289.60

Finding the Fourth Proportional to 3,326.40, 4,989.60 and 2,289.60

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Solution

The fourth proportional to 3,326.40, 4,989.60 and 2,289.60 is: 3,434.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.40 : 4,989.60 = 2,289.60 : x
  2. Step 2: Convert to fraction form
    3,326.40/4,989.60 = 2,289.60/x
  3. Step 3: Cross multiply
    3,326.40x = 4,989.60 × 2,289.60
  4. Step 4: Simplify right side
    3,326.40x = 11,424,188.16
  5. Step 5: Solve for x
    x = 11,424,188.16/3,326.40
  6. Step 6: Final answer
    x = 3,434.40

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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.