Home / 8,178.26-11,285.61-4,640.99

Finding the Fourth Proportional to 8,178.26, 11,285.61 and 4,640.99

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Solution

The fourth proportional to 8,178.26, 11,285.61 and 4,640.99 is: 6,404.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.26 : 11,285.61 = 4,640.99 : x
  2. Step 2: Convert to fraction form
    8,178.26/11,285.61 = 4,640.99/x
  3. Step 3: Cross multiply
    8,178.26x = 11,285.61 × 4,640.99
  4. Step 4: Simplify right side
    8,178.26x = 52,376,403.15
  5. Step 5: Solve for x
    x = 52,376,403.15/8,178.26
  6. Step 6: Final answer
    x = 6,404.35

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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.