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Finding the Fourth Proportional to 8,462.74, 12,705.76 and 4,305.57

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Solution

The fourth proportional to 8,462.74, 12,705.76 and 4,305.57 is: 6,464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,462.74 : 12,705.76 = 4,305.57 : x
  2. Step 2: Convert to fraction form
    8,462.74/12,705.76 = 4,305.57/x
  3. Step 3: Cross multiply
    8,462.74x = 12,705.76 × 4,305.57
  4. Step 4: Simplify right side
    8,462.74x = 54,705,539.08
  5. Step 5: Solve for x
    x = 54,705,539.08/8,462.74
  6. Step 6: Final answer
    x = 6,464.28

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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.