Home / 8,189.29-11,299.85-4,651.21

Finding the Fourth Proportional to 8,189.29, 11,299.85 and 4,651.21

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Solution

The fourth proportional to 8,189.29, 11,299.85 and 4,651.21 is: 6,417.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,189.29 : 11,299.85 = 4,651.21 : x
  2. Step 2: Convert to fraction form
    8,189.29/11,299.85 = 4,651.21/x
  3. Step 3: Cross multiply
    8,189.29x = 11,299.85 × 4,651.21
  4. Step 4: Simplify right side
    8,189.29x = 52,557,918.82
  5. Step 5: Solve for x
    x = 52,557,918.82/8,189.29
  6. Step 6: Final answer
    x = 6,417.89

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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.