Home / 3,904.38-5,385.23-2,486.67

Finding the Fourth Proportional to 3,904.38, 5,385.23 and 2,486.67

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Solution

The fourth proportional to 3,904.38, 5,385.23 and 2,486.67 is: 3,429.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.38 : 5,385.23 = 2,486.67 : x
  2. Step 2: Convert to fraction form
    3,904.38/5,385.23 = 2,486.67/x
  3. Step 3: Cross multiply
    3,904.38x = 5,385.23 × 2,486.67
  4. Step 4: Simplify right side
    3,904.38x = 13,391,277.45
  5. Step 5: Solve for x
    x = 13,391,277.45/3,904.38
  6. Step 6: Final answer
    x = 3,429.81

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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.