Home / 8,439.38-11,646.29-4,662.80

Finding the Fourth Proportional to 8,439.38, 11,646.29 and 4,662.80

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Solution

The fourth proportional to 8,439.38, 11,646.29 and 4,662.80 is: 6,434.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.38 : 11,646.29 = 4,662.80 : x
  2. Step 2: Convert to fraction form
    8,439.38/11,646.29 = 4,662.80/x
  3. Step 3: Cross multiply
    8,439.38x = 11,646.29 × 4,662.80
  4. Step 4: Simplify right side
    8,439.38x = 54,304,274.44
  5. Step 5: Solve for x
    x = 54,304,274.44/8,439.38
  6. Step 6: Final answer
    x = 6,434.63

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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.