Home / 3,310.90-4,569.05-1,818.78

Finding the Fourth Proportional to 3,310.90, 4,569.05 and 1,818.78

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Solution

The fourth proportional to 3,310.90, 4,569.05 and 1,818.78 is: 2,509.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,310.90 : 4,569.05 = 1,818.78 : x
  2. Step 2: Convert to fraction form
    3,310.90/4,569.05 = 1,818.78/x
  3. Step 3: Cross multiply
    3,310.90x = 4,569.05 × 1,818.78
  4. Step 4: Simplify right side
    3,310.90x = 8,310,084.17
  5. Step 5: Solve for x
    x = 8,310,084.17/3,310.90
  6. Step 6: Final answer
    x = 2,509.92

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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.