Home / 4,640.21-6,399.76-4,079.48

Finding the Fourth Proportional to 4,640.21, 6,399.76 and 4,079.48

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Solution

The fourth proportional to 4,640.21, 6,399.76 and 4,079.48 is: 5,626.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,640.21 : 6,399.76 = 4,079.48 : x
  2. Step 2: Convert to fraction form
    4,640.21/6,399.76 = 4,079.48/x
  3. Step 3: Cross multiply
    4,640.21x = 6,399.76 × 4,079.48
  4. Step 4: Simplify right side
    4,640.21x = 26,107,692.92
  5. Step 5: Solve for x
    x = 26,107,692.92/4,640.21
  6. Step 6: Final answer
    x = 5,626.40

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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.