Home / 3,465.86-4,778.79-2,800.65

Finding the Fourth Proportional to 3,465.86, 4,778.79 and 2,800.65

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Solution

The fourth proportional to 3,465.86, 4,778.79 and 2,800.65 is: 3,861.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465.86 : 4,778.79 = 2,800.65 : x
  2. Step 2: Convert to fraction form
    3,465.86/4,778.79 = 2,800.65/x
  3. Step 3: Cross multiply
    3,465.86x = 4,778.79 × 2,800.65
  4. Step 4: Simplify right side
    3,465.86x = 13,383,718.21
  5. Step 5: Solve for x
    x = 13,383,718.21/3,465.86
  6. Step 6: Final answer
    x = 3,861.59

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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.