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Finding the Fourth Proportional to 6,433.63, 8,879.90 and 4,191.62

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Solution

The fourth proportional to 6,433.63, 8,879.90 and 4,191.62 is: 5,785.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,433.63 : 8,879.90 = 4,191.62 : x
  2. Step 2: Convert to fraction form
    6,433.63/8,879.90 = 4,191.62/x
  3. Step 3: Cross multiply
    6,433.63x = 8,879.90 × 4,191.62
  4. Step 4: Simplify right side
    6,433.63x = 37,221,101.08
  5. Step 5: Solve for x
    x = 37,221,101.08/6,433.63
  6. Step 6: Final answer
    x = 5,785.40

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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.