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Finding the Fourth Proportional to 8,464.30, 12,675.49 and 4,945.05

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Solution

The fourth proportional to 8,464.30, 12,675.49 and 4,945.05 is: 7,405.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,464.30 : 12,675.49 = 4,945.05 : x
  2. Step 2: Convert to fraction form
    8,464.30/12,675.49 = 4,945.05/x
  3. Step 3: Cross multiply
    8,464.30x = 12,675.49 × 4,945.05
  4. Step 4: Simplify right side
    8,464.30x = 62,680,919.46
  5. Step 5: Solve for x
    x = 62,680,919.46/8,464.30
  6. Step 6: Final answer
    x = 7,405.33

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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.