Home / 3,434.40-4,741.20-2,872.80

Finding the Fourth Proportional to 3,434.40, 4,741.20 and 2,872.80

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Solution

The fourth proportional to 3,434.40, 4,741.20 and 2,872.80 is: 3,965.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,434.40 : 4,741.20 = 2,872.80 : x
  2. Step 2: Convert to fraction form
    3,434.40/4,741.20 = 2,872.80/x
  3. Step 3: Cross multiply
    3,434.40x = 4,741.20 × 2,872.80
  4. Step 4: Simplify right side
    3,434.40x = 13,620,519.36
  5. Step 5: Solve for x
    x = 13,620,519.36/3,434.40
  6. Step 6: Final answer
    x = 3,965.91

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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.