Home / 8,128.28-12,192.77-2,795.13

Finding the Fourth Proportional to 8,128.28, 12,192.77 and 2,795.13

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Solution

The fourth proportional to 8,128.28, 12,192.77 and 2,795.13 is: 4,192.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.28 : 12,192.77 = 2,795.13 : x
  2. Step 2: Convert to fraction form
    8,128.28/12,192.77 = 2,795.13/x
  3. Step 3: Cross multiply
    8,128.28x = 12,192.77 × 2,795.13
  4. Step 4: Simplify right side
    8,128.28x = 34,080,363.23
  5. Step 5: Solve for x
    x = 34,080,363.23/8,128.28
  6. Step 6: Final answer
    x = 4,192.82

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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.