Home / 8,209.69-11,329.38-4,672.90

Finding the Fourth Proportional to 8,209.69, 11,329.38 and 4,672.90

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Solution

The fourth proportional to 8,209.69, 11,329.38 and 4,672.90 is: 6,448.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,209.69 : 11,329.38 = 4,672.90 : x
  2. Step 2: Convert to fraction form
    8,209.69/11,329.38 = 4,672.90/x
  3. Step 3: Cross multiply
    8,209.69x = 11,329.38 × 4,672.90
  4. Step 4: Simplify right side
    8,209.69x = 52,941,048.67
  5. Step 5: Solve for x
    x = 52,941,048.67/8,209.69
  6. Step 6: Final answer
    x = 6,448.61

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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.