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Finding the Fourth Proportional to 8,626.39, 12,939.12 and 2,783.00

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Solution

The fourth proportional to 8,626.39, 12,939.12 and 2,783.00 is: 4,174.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.39 : 12,939.12 = 2,783.00 : x
  2. Step 2: Convert to fraction form
    8,626.39/12,939.12 = 2,783.00/x
  3. Step 3: Cross multiply
    8,626.39x = 12,939.12 × 2,783.00
  4. Step 4: Simplify right side
    8,626.39x = 36,009,506.26
  5. Step 5: Solve for x
    x = 36,009,506.26/8,626.39
  6. Step 6: Final answer
    x = 4,174.34

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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.