Home / 7,961.58-11,947.55-3,031.26

Finding the Fourth Proportional to 7,961.58, 11,947.55 and 3,031.26

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Solution

The fourth proportional to 7,961.58, 11,947.55 and 3,031.26 is: 4,548.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.58 : 11,947.55 = 3,031.26 : x
  2. Step 2: Convert to fraction form
    7,961.58/11,947.55 = 3,031.26/x
  3. Step 3: Cross multiply
    7,961.58x = 11,947.55 × 3,031.26
  4. Step 4: Simplify right side
    7,961.58x = 36,216,130.41
  5. Step 5: Solve for x
    x = 36,216,130.41/7,961.58
  6. Step 6: Final answer
    x = 4,548.86

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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.