Home / 3,421.80-4,722.52-1,930.28

Finding the Fourth Proportional to 3,421.80, 4,722.52 and 1,930.28

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Solution

The fourth proportional to 3,421.80, 4,722.52 and 1,930.28 is: 2,664.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.80 : 4,722.52 = 1,930.28 : x
  2. Step 2: Convert to fraction form
    3,421.80/4,722.52 = 1,930.28/x
  3. Step 3: Cross multiply
    3,421.80x = 4,722.52 × 1,930.28
  4. Step 4: Simplify right side
    3,421.80x = 9,115,785.91
  5. Step 5: Solve for x
    x = 9,115,785.91/3,421.80
  6. Step 6: Final answer
    x = 2,664.03

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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.