Home / 1,679.80-2,318.94-1,580.08

Finding the Fourth Proportional to 1,679.80, 2,318.94 and 1,580.08

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Solution

The fourth proportional to 1,679.80, 2,318.94 and 1,580.08 is: 2,181.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.80 : 2,318.94 = 1,580.08 : x
  2. Step 2: Convert to fraction form
    1,679.80/2,318.94 = 1,580.08/x
  3. Step 3: Cross multiply
    1,679.80x = 2,318.94 × 1,580.08
  4. Step 4: Simplify right side
    1,679.80x = 3,664,110.72
  5. Step 5: Solve for x
    x = 3,664,110.72/1,679.80
  6. Step 6: Final answer
    x = 2,181.28

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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.