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Finding the Fourth Proportional to 8,581.12, 12,871.06 and 5,622.59

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Solution

The fourth proportional to 8,581.12, 12,871.06 and 5,622.59 is: 8,433.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.12 : 12,871.06 = 5,622.59 : x
  2. Step 2: Convert to fraction form
    8,581.12/12,871.06 = 5,622.59/x
  3. Step 3: Cross multiply
    8,581.12x = 12,871.06 × 5,622.59
  4. Step 4: Simplify right side
    8,581.12x = 72,368,693.25
  5. Step 5: Solve for x
    x = 72,368,693.25/8,581.12
  6. Step 6: Final answer
    x = 8,433.48

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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.