Home / 1,725.12-2,380.63-1,583.90

Finding the Fourth Proportional to 1,725.12, 2,380.63 and 1,583.90

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Solution

The fourth proportional to 1,725.12, 2,380.63 and 1,583.90 is: 2,185.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.12 : 2,380.63 = 1,583.90 : x
  2. Step 2: Convert to fraction form
    1,725.12/2,380.63 = 1,583.90/x
  3. Step 3: Cross multiply
    1,725.12x = 2,380.63 × 1,583.90
  4. Step 4: Simplify right side
    1,725.12x = 3,770,693.74
  5. Step 5: Solve for x
    x = 3,770,693.74/1,725.12
  6. Step 6: Final answer
    x = 2,185.75

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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.