Home / 8,118.34-12,177.42-2,571.68

Finding the Fourth Proportional to 8,118.34, 12,177.42 and 2,571.68

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Solution

The fourth proportional to 8,118.34, 12,177.42 and 2,571.68 is: 3,857.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.34 : 12,177.42 = 2,571.68 : x
  2. Step 2: Convert to fraction form
    8,118.34/12,177.42 = 2,571.68/x
  3. Step 3: Cross multiply
    8,118.34x = 12,177.42 × 2,571.68
  4. Step 4: Simplify right side
    8,118.34x = 31,316,427.47
  5. Step 5: Solve for x
    x = 31,316,427.47/8,118.34
  6. Step 6: Final answer
    x = 3,857.49

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1.5x scale

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.