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Finding the Fourth Proportional to 8,368.12, 12,551.52 and 4,203.88

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Solution

The fourth proportional to 8,368.12, 12,551.52 and 4,203.88 is: 6,305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.12 : 12,551.52 = 4,203.88 : x
  2. Step 2: Convert to fraction form
    8,368.12/12,551.52 = 4,203.88/x
  3. Step 3: Cross multiply
    8,368.12x = 12,551.52 × 4,203.88
  4. Step 4: Simplify right side
    8,368.12x = 52,765,083.90
  5. Step 5: Solve for x
    x = 52,765,083.90/8,368.12
  6. Step 6: Final answer
    x = 6,305.49

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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.