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Finding the Fourth Proportional to 8,259.81, 12,391.60 and 3,580.60

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Solution

The fourth proportional to 8,259.81, 12,391.60 and 3,580.60 is: 5,371.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.81 : 12,391.60 = 3,580.60 : x
  2. Step 2: Convert to fraction form
    8,259.81/12,391.60 = 3,580.60/x
  3. Step 3: Cross multiply
    8,259.81x = 12,391.60 × 3,580.60
  4. Step 4: Simplify right side
    8,259.81x = 44,369,362.96
  5. Step 5: Solve for x
    x = 44,369,362.96/8,259.81
  6. Step 6: Final answer
    x = 5,371.72

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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.