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Finding the Fourth Proportional to 3,409.80, 4,708.74 and 3,225.72

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Solution

The fourth proportional to 3,409.80, 4,708.74 and 3,225.72 is: 4,454.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.80 : 4,708.74 = 3,225.72 : x
  2. Step 2: Convert to fraction form
    3,409.80/4,708.74 = 3,225.72/x
  3. Step 3: Cross multiply
    3,409.80x = 4,708.74 × 3,225.72
  4. Step 4: Simplify right side
    3,409.80x = 15,189,076.79
  5. Step 5: Solve for x
    x = 15,189,076.79/3,409.80
  6. Step 6: Final answer
    x = 4,454.54

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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.