Home / 8,720.22-13,088.55-3,178.92

Finding the Fourth Proportional to 8,720.22, 13,088.55 and 3,178.92

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Solution

The fourth proportional to 8,720.22, 13,088.55 and 3,178.92 is: 4,771.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.22 : 13,088.55 = 3,178.92 : x
  2. Step 2: Convert to fraction form
    8,720.22/13,088.55 = 3,178.92/x
  3. Step 3: Cross multiply
    8,720.22x = 13,088.55 × 3,178.92
  4. Step 4: Simplify right side
    8,720.22x = 41,607,453.37
  5. Step 5: Solve for x
    x = 41,607,453.37/8,720.22
  6. Step 6: Final answer
    x = 4,771.38

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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.