Home / 8,156.70-11,255.22-5,172.66

Finding the Fourth Proportional to 8,156.70, 11,255.22 and 5,172.66

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Solution

The fourth proportional to 8,156.70, 11,255.22 and 5,172.66 is: 7,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.70 : 11,255.22 = 5,172.66 : x
  2. Step 2: Convert to fraction form
    8,156.70/11,255.22 = 5,172.66/x
  3. Step 3: Cross multiply
    8,156.70x = 11,255.22 × 5,172.66
  4. Step 4: Simplify right side
    8,156.70x = 58,219,426.29
  5. Step 5: Solve for x
    x = 58,219,426.29/8,156.70
  6. Step 6: Final answer
    x = 7,137.62

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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.