Home / 3,154.95-4,354.25-1,811.09

Finding the Fourth Proportional to 3,154.95, 4,354.25 and 1,811.09

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Solution

The fourth proportional to 3,154.95, 4,354.25 and 1,811.09 is: 2,499.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.95 : 4,354.25 = 1,811.09 : x
  2. Step 2: Convert to fraction form
    3,154.95/4,354.25 = 1,811.09/x
  3. Step 3: Cross multiply
    3,154.95x = 4,354.25 × 1,811.09
  4. Step 4: Simplify right side
    3,154.95x = 7,885,938.63
  5. Step 5: Solve for x
    x = 7,885,938.63/3,154.95
  6. Step 6: Final answer
    x = 2,499.54

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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.