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Finding the Fourth Proportional to 8,003.79, 12,005.58 and 2,808.45

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Solution

The fourth proportional to 8,003.79, 12,005.58 and 2,808.45 is: 4,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,003.79 : 12,005.58 = 2,808.45 : x
  2. Step 2: Convert to fraction form
    8,003.79/12,005.58 = 2,808.45/x
  3. Step 3: Cross multiply
    8,003.79x = 12,005.58 × 2,808.45
  4. Step 4: Simplify right side
    8,003.79x = 33,717,071.15
  5. Step 5: Solve for x
    x = 33,717,071.15/8,003.79
  6. Step 6: Final answer
    x = 4,212.64

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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.