Home / 3,289.60-4,930.80-1,440.40

Finding the Fourth Proportional to 3,289.60, 4,930.80 and 1,440.40

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Solution

The fourth proportional to 3,289.60, 4,930.80 and 1,440.40 is: 2,159.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.60 : 4,930.80 = 1,440.40 : x
  2. Step 2: Convert to fraction form
    3,289.60/4,930.80 = 1,440.40/x
  3. Step 3: Cross multiply
    3,289.60x = 4,930.80 × 1,440.40
  4. Step 4: Simplify right side
    3,289.60x = 7,102,324.32
  5. Step 5: Solve for x
    x = 7,102,324.32/3,289.60
  6. Step 6: Final answer
    x = 2,159.02

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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.