Home / 3,422.10-5,129.10-1,777.80

Finding the Fourth Proportional to 3,422.10, 5,129.10 and 1,777.80

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Solution

The fourth proportional to 3,422.10, 5,129.10 and 1,777.80 is: 2,664.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.10 : 5,129.10 = 1,777.80 : x
  2. Step 2: Convert to fraction form
    3,422.10/5,129.10 = 1,777.80/x
  3. Step 3: Cross multiply
    3,422.10x = 5,129.10 × 1,777.80
  4. Step 4: Simplify right side
    3,422.10x = 9,118,513.98
  5. Step 5: Solve for x
    x = 9,118,513.98/3,422.10
  6. Step 6: Final answer
    x = 2,664.60

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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.