Home / 3,422.20-4,722.52-1,930.09

Finding the Fourth Proportional to 3,422.20, 4,722.52 and 1,930.09

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Solution

The fourth proportional to 3,422.20, 4,722.52 and 1,930.09 is: 2,663.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.20 : 4,722.52 = 1,930.09 : x
  2. Step 2: Convert to fraction form
    3,422.20/4,722.52 = 1,930.09/x
  3. Step 3: Cross multiply
    3,422.20x = 4,722.52 × 1,930.09
  4. Step 4: Simplify right side
    3,422.20x = 9,114,888.63
  5. Step 5: Solve for x
    x = 9,114,888.63/3,422.20
  6. Step 6: Final answer
    x = 2,663.46

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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.