Home / 3,200.45-4,407.75-2,758.19

Finding the Fourth Proportional to 3,200.45, 4,407.75 and 2,758.19

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Solution

The fourth proportional to 3,200.45, 4,407.75 and 2,758.19 is: 3,798.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,200.45 : 4,407.75 = 2,758.19 : x
  2. Step 2: Convert to fraction form
    3,200.45/4,407.75 = 2,758.19/x
  3. Step 3: Cross multiply
    3,200.45x = 4,407.75 × 2,758.19
  4. Step 4: Simplify right side
    3,200.45x = 12,157,389.93
  5. Step 5: Solve for x
    x = 12,157,389.93/3,200.45
  6. Step 6: Final answer
    x = 3,798.66

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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.