Home / 2,109.10-3,160.80-1,619.74

Finding the Fourth Proportional to 2,109.10, 3,160.80 and 1,619.74

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Solution

The fourth proportional to 2,109.10, 3,160.80 and 1,619.74 is: 2,427.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.10 : 3,160.80 = 1,619.74 : x
  2. Step 2: Convert to fraction form
    2,109.10/3,160.80 = 1,619.74/x
  3. Step 3: Cross multiply
    2,109.10x = 3,160.80 × 1,619.74
  4. Step 4: Simplify right side
    2,109.10x = 5,119,674.19
  5. Step 5: Solve for x
    x = 5,119,674.19/2,109.10
  6. Step 6: Final answer
    x = 2,427.42

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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.