Home / 3,455.81-4,771.83-2,817.85

Finding the Fourth Proportional to 3,455.81, 4,771.83 and 2,817.85

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Solution

The fourth proportional to 3,455.81, 4,771.83 and 2,817.85 is: 3,890.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.81 : 4,771.83 = 2,817.85 : x
  2. Step 2: Convert to fraction form
    3,455.81/4,771.83 = 2,817.85/x
  3. Step 3: Cross multiply
    3,455.81x = 4,771.83 × 2,817.85
  4. Step 4: Simplify right side
    3,455.81x = 13,446,301.17
  5. Step 5: Solve for x
    x = 13,446,301.17/3,455.81
  6. Step 6: Final answer
    x = 3,890.93

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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.