Home / 8,156.31-11,255.75-4,620.21

Finding the Fourth Proportional to 8,156.31, 11,255.75 and 4,620.21

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Solution

The fourth proportional to 8,156.31, 11,255.75 and 4,620.21 is: 6,375.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.31 : 11,255.75 = 4,620.21 : x
  2. Step 2: Convert to fraction form
    8,156.31/11,255.75 = 4,620.21/x
  3. Step 3: Cross multiply
    8,156.31x = 11,255.75 × 4,620.21
  4. Step 4: Simplify right side
    8,156.31x = 52,003,928.71
  5. Step 5: Solve for x
    x = 52,003,928.71/8,156.31
  6. Step 6: Final answer
    x = 6,375.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.