Home / 1,817.10-2,720.79-949.59

Finding the Fourth Proportional to 1,817.10, 2,720.79 and 949.59

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Solution

The fourth proportional to 1,817.10, 2,720.79 and 949.59 is: 1,421.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.10 : 2,720.79 = 949.59 : x
  2. Step 2: Convert to fraction form
    1,817.10/2,720.79 = 949.59/x
  3. Step 3: Cross multiply
    1,817.10x = 2,720.79 × 949.59
  4. Step 4: Simplify right side
    1,817.10x = 2,583,634.98
  5. Step 5: Solve for x
    x = 2,583,634.98/1,817.10
  6. Step 6: Final answer
    x = 1,421.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.