Home / 3,124.43-4,310.75-1,779.95

Finding the Fourth Proportional to 3,124.43, 4,310.75 and 1,779.95

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Solution

The fourth proportional to 3,124.43, 4,310.75 and 1,779.95 is: 2,455.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.43 : 4,310.75 = 1,779.95 : x
  2. Step 2: Convert to fraction form
    3,124.43/4,310.75 = 1,779.95/x
  3. Step 3: Cross multiply
    3,124.43x = 4,310.75 × 1,779.95
  4. Step 4: Simplify right side
    3,124.43x = 7,672,919.46
  5. Step 5: Solve for x
    x = 7,672,919.46/3,124.43
  6. Step 6: Final answer
    x = 2,455.78

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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.