Home / 8,128.16-12,192.32-2,284.88

Finding the Fourth Proportional to 8,128.16, 12,192.32 and 2,284.88

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Solution

The fourth proportional to 8,128.16, 12,192.32 and 2,284.88 is: 3,427.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.16 : 12,192.32 = 2,284.88 : x
  2. Step 2: Convert to fraction form
    8,128.16/12,192.32 = 2,284.88/x
  3. Step 3: Cross multiply
    8,128.16x = 12,192.32 × 2,284.88
  4. Step 4: Simplify right side
    8,128.16x = 27,857,988.12
  5. Step 5: Solve for x
    x = 27,857,988.12/8,128.16
  6. Step 6: Final answer
    x = 3,427.34

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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.