Home / 3,146.20-4,342.30-1,819.68

Finding the Fourth Proportional to 3,146.20, 4,342.30 and 1,819.68

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Solution

The fourth proportional to 3,146.20, 4,342.30 and 1,819.68 is: 2,511.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.20 : 4,342.30 = 1,819.68 : x
  2. Step 2: Convert to fraction form
    3,146.20/4,342.30 = 1,819.68/x
  3. Step 3: Cross multiply
    3,146.20x = 4,342.30 × 1,819.68
  4. Step 4: Simplify right side
    3,146.20x = 7,901,596.46
  5. Step 5: Solve for x
    x = 7,901,596.46/3,146.20
  6. Step 6: Final answer
    x = 2,511.47

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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.