Home / 2,814.60-3,884.40-1,555.95

Finding the Fourth Proportional to 2,814.60, 3,884.40 and 1,555.95

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Solution

The fourth proportional to 2,814.60, 3,884.40 and 1,555.95 is: 2,147.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.60 : 3,884.40 = 1,555.95 : x
  2. Step 2: Convert to fraction form
    2,814.60/3,884.40 = 1,555.95/x
  3. Step 3: Cross multiply
    2,814.60x = 3,884.40 × 1,555.95
  4. Step 4: Simplify right side
    2,814.60x = 6,043,932.18
  5. Step 5: Solve for x
    x = 6,043,932.18/2,814.60
  6. Step 6: Final answer
    x = 2,147.35

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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.