Home / 4,254.11-6,381.67-1,620.80

Finding the Fourth Proportional to 4,254.11, 6,381.67 and 1,620.80

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Solution

The fourth proportional to 4,254.11, 6,381.67 and 1,620.80 is: 2,431.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,254.11 : 6,381.67 = 1,620.80 : x
  2. Step 2: Convert to fraction form
    4,254.11/6,381.67 = 1,620.80/x
  3. Step 3: Cross multiply
    4,254.11x = 6,381.67 × 1,620.80
  4. Step 4: Simplify right side
    4,254.11x = 10,343,410.74
  5. Step 5: Solve for x
    x = 10,343,410.74/4,254.11
  6. Step 6: Final answer
    x = 2,431.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.