Home / 3,090.78-4,630.10-1,789.52

Finding the Fourth Proportional to 3,090.78, 4,630.10 and 1,789.52

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Solution

The fourth proportional to 3,090.78, 4,630.10 and 1,789.52 is: 2,680.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.78 : 4,630.10 = 1,789.52 : x
  2. Step 2: Convert to fraction form
    3,090.78/4,630.10 = 1,789.52/x
  3. Step 3: Cross multiply
    3,090.78x = 4,630.10 × 1,789.52
  4. Step 4: Simplify right side
    3,090.78x = 8,285,624.45
  5. Step 5: Solve for x
    x = 8,285,624.45/3,090.78
  6. Step 6: Final answer
    x = 2,680.76

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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.