Home / 3,429.20-5,143.80-3,407.60

Finding the Fourth Proportional to 3,429.20, 5,143.80 and 3,407.60

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Solution

The fourth proportional to 3,429.20, 5,143.80 and 3,407.60 is: 5,111.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.20 : 5,143.80 = 3,407.60 : x
  2. Step 2: Convert to fraction form
    3,429.20/5,143.80 = 3,407.60/x
  3. Step 3: Cross multiply
    3,429.20x = 5,143.80 × 3,407.60
  4. Step 4: Simplify right side
    3,429.20x = 17,528,012.88
  5. Step 5: Solve for x
    x = 17,528,012.88/3,429.20
  6. Step 6: Final answer
    x = 5,111.40

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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.