Home / 1,690.62-2,539.90-1,597.38

Finding the Fourth Proportional to 1,690.62, 2,539.90 and 1,597.38

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Solution

The fourth proportional to 1,690.62, 2,539.90 and 1,597.38 is: 2,399.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.62 : 2,539.90 = 1,597.38 : x
  2. Step 2: Convert to fraction form
    1,690.62/2,539.90 = 1,597.38/x
  3. Step 3: Cross multiply
    1,690.62x = 2,539.90 × 1,597.38
  4. Step 4: Simplify right side
    1,690.62x = 4,057,185.46
  5. Step 5: Solve for x
    x = 4,057,185.46/1,690.62
  6. Step 6: Final answer
    x = 2,399.82

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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.