Home / 8,192.80-12,276.40-6,887.20

Finding the Fourth Proportional to 8,192.80, 12,276.40 and 6,887.20

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Solution

The fourth proportional to 8,192.80, 12,276.40 and 6,887.20 is: 10,320.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,192.80 : 12,276.40 = 6,887.20 : x
  2. Step 2: Convert to fraction form
    8,192.80/12,276.40 = 6,887.20/x
  3. Step 3: Cross multiply
    8,192.80x = 12,276.40 × 6,887.20
  4. Step 4: Simplify right side
    8,192.80x = 84,550,022.08
  5. Step 5: Solve for x
    x = 84,550,022.08/8,192.80
  6. Step 6: Final answer
    x = 10,320.04

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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.