Home / 3,208-4,426.80-1,810.72

Finding the Fourth Proportional to 3,208, 4,426.80 and 1,810.72

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Solution

The fourth proportional to 3,208, 4,426.80 and 1,810.72 is: 2,498.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208 : 4,426.80 = 1,810.72 : x
  2. Step 2: Convert to fraction form
    3,208/4,426.80 = 1,810.72/x
  3. Step 3: Cross multiply
    3,208x = 4,426.80 × 1,810.72
  4. Step 4: Simplify right side
    3,208x = 8,015,695.30
  5. Step 5: Solve for x
    x = 8,015,695.30/3,208
  6. Step 6: Final answer
    x = 2,498.66

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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.