Home / 3,260.36-4,890.72-1,312.31

Finding the Fourth Proportional to 3,260.36, 4,890.72 and 1,312.31

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Solution

The fourth proportional to 3,260.36, 4,890.72 and 1,312.31 is: 1,968.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,260.36 : 4,890.72 = 1,312.31 : x
  2. Step 2: Convert to fraction form
    3,260.36/4,890.72 = 1,312.31/x
  3. Step 3: Cross multiply
    3,260.36x = 4,890.72 × 1,312.31
  4. Step 4: Simplify right side
    3,260.36x = 6,418,140.76
  5. Step 5: Solve for x
    x = 6,418,140.76/3,260.36
  6. Step 6: Final answer
    x = 1,968.54

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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.