Home / 3,261.70-4,889.67-1,312.57

Finding the Fourth Proportional to 3,261.70, 4,889.67 and 1,312.57

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Solution

The fourth proportional to 3,261.70, 4,889.67 and 1,312.57 is: 1,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,261.70 : 4,889.67 = 1,312.57 : x
  2. Step 2: Convert to fraction form
    3,261.70/4,889.67 = 1,312.57/x
  3. Step 3: Cross multiply
    3,261.70x = 4,889.67 × 1,312.57
  4. Step 4: Simplify right side
    3,261.70x = 6,418,034.15
  5. Step 5: Solve for x
    x = 6,418,034.15/3,261.70
  6. Step 6: Final answer
    x = 1,967.70

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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.