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Finding the Fourth Proportional to 8,259.34, 12,389.12 and 2,713.12

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Solution

The fourth proportional to 8,259.34, 12,389.12 and 2,713.12 is: 4,069.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.34 : 12,389.12 = 2,713.12 : x
  2. Step 2: Convert to fraction form
    8,259.34/12,389.12 = 2,713.12/x
  3. Step 3: Cross multiply
    8,259.34x = 12,389.12 × 2,713.12
  4. Step 4: Simplify right side
    8,259.34x = 33,613,169.25
  5. Step 5: Solve for x
    x = 33,613,169.25/8,259.34
  6. Step 6: Final answer
    x = 4,069.72

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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.