Home / 3,260.67-4,890.60-1,312.89

Finding the Fourth Proportional to 3,260.67, 4,890.60 and 1,312.89

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Solution

The fourth proportional to 3,260.67, 4,890.60 and 1,312.89 is: 1,969.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,260.67 : 4,890.60 = 1,312.89 : x
  2. Step 2: Convert to fraction form
    3,260.67/4,890.60 = 1,312.89/x
  3. Step 3: Cross multiply
    3,260.67x = 4,890.60 × 1,312.89
  4. Step 4: Simplify right side
    3,260.67x = 6,420,819.83
  5. Step 5: Solve for x
    x = 6,420,819.83/3,260.67
  6. Step 6: Final answer
    x = 1,969.17

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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.