Home / 2,157.90-3,234.82-1,630

Finding the Fourth Proportional to 2,157.90, 3,234.82 and 1,630

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Solution

The fourth proportional to 2,157.90, 3,234.82 and 1,630 is: 2,443.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.90 : 3,234.82 = 1,630 : x
  2. Step 2: Convert to fraction form
    2,157.90/3,234.82 = 1,630/x
  3. Step 3: Cross multiply
    2,157.90x = 3,234.82 × 1,630
  4. Step 4: Simplify right side
    2,157.90x = 5,272,756.60
  5. Step 5: Solve for x
    x = 5,272,756.60/2,157.90
  6. Step 6: Final answer
    x = 2,443.47

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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.