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Finding the Fourth Proportional to 8,356.80, 12,530.88 and 4,192.32

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Solution

The fourth proportional to 8,356.80, 12,530.88 and 4,192.32 is: 6,286.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,356.80 : 12,530.88 = 4,192.32 : x
  2. Step 2: Convert to fraction form
    8,356.80/12,530.88 = 4,192.32/x
  3. Step 3: Cross multiply
    8,356.80x = 12,530.88 × 4,192.32
  4. Step 4: Simplify right side
    8,356.80x = 52,533,458.84
  5. Step 5: Solve for x
    x = 52,533,458.84/8,356.80
  6. Step 6: Final answer
    x = 6,286.31

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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.