Home / 8,439.34-11,646.64-4,662.72

Finding the Fourth Proportional to 8,439.34, 11,646.64 and 4,662.72

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Solution

The fourth proportional to 8,439.34, 11,646.64 and 4,662.72 is: 6,434.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.34 : 11,646.64 = 4,662.72 : x
  2. Step 2: Convert to fraction form
    8,439.34/11,646.64 = 4,662.72/x
  3. Step 3: Cross multiply
    8,439.34x = 11,646.64 × 4,662.72
  4. Step 4: Simplify right side
    8,439.34x = 54,305,021.26
  5. Step 5: Solve for x
    x = 54,305,021.26/8,439.34
  6. Step 6: Final answer
    x = 6,434.75

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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.