Home / 1,918.16-2,872.44-1,609.20

Finding the Fourth Proportional to 1,918.16, 2,872.44 and 1,609.20

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Solution

The fourth proportional to 1,918.16, 2,872.44 and 1,609.20 is: 2,409.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.16 : 2,872.44 = 1,609.20 : x
  2. Step 2: Convert to fraction form
    1,918.16/2,872.44 = 1,609.20/x
  3. Step 3: Cross multiply
    1,918.16x = 2,872.44 × 1,609.20
  4. Step 4: Simplify right side
    1,918.16x = 4,622,330.45
  5. Step 5: Solve for x
    x = 4,622,330.45/1,918.16
  6. Step 6: Final answer
    x = 2,409.77

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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.