Home / 3,890.06-5,372.64-2,628.92

Finding the Fourth Proportional to 3,890.06, 5,372.64 and 2,628.92

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Solution

The fourth proportional to 3,890.06, 5,372.64 and 2,628.92 is: 3,630.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.06 : 5,372.64 = 2,628.92 : x
  2. Step 2: Convert to fraction form
    3,890.06/5,372.64 = 2,628.92/x
  3. Step 3: Cross multiply
    3,890.06x = 5,372.64 × 2,628.92
  4. Step 4: Simplify right side
    3,890.06x = 14,124,240.75
  5. Step 5: Solve for x
    x = 14,124,240.75/3,890.06
  6. Step 6: Final answer
    x = 3,630.85

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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.