Home / 8,439.27-11,646.86-4,662.78

Finding the Fourth Proportional to 8,439.27, 11,646.86 and 4,662.78

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Solution

The fourth proportional to 8,439.27, 11,646.86 and 4,662.78 is: 6,435.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.27 : 11,646.86 = 4,662.78 : x
  2. Step 2: Convert to fraction form
    8,439.27/11,646.86 = 4,662.78/x
  3. Step 3: Cross multiply
    8,439.27x = 11,646.86 × 4,662.78
  4. Step 4: Simplify right side
    8,439.27x = 54,306,722.56
  5. Step 5: Solve for x
    x = 54,306,722.56/8,439.27
  6. Step 6: Final answer
    x = 6,435.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.