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Finding the Fourth Proportional to 6,309.15, 9,464.19 and 4,919.79

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Solution

The fourth proportional to 6,309.15, 9,464.19 and 4,919.79 is: 7,380.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,309.15 : 9,464.19 = 4,919.79 : x
  2. Step 2: Convert to fraction form
    6,309.15/9,464.19 = 4,919.79/x
  3. Step 3: Cross multiply
    6,309.15x = 9,464.19 × 4,919.79
  4. Step 4: Simplify right side
    6,309.15x = 46,561,827.32
  5. Step 5: Solve for x
    x = 46,561,827.32/6,309.15
  6. Step 6: Final answer
    x = 7,380.05

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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.