Home / 2,108.03-3,159.61-1,328.60

Finding the Fourth Proportional to 2,108.03, 3,159.61 and 1,328.60

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Solution

The fourth proportional to 2,108.03, 3,159.61 and 1,328.60 is: 1,991.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.03 : 3,159.61 = 1,328.60 : x
  2. Step 2: Convert to fraction form
    2,108.03/3,159.61 = 1,328.60/x
  3. Step 3: Cross multiply
    2,108.03x = 3,159.61 × 1,328.60
  4. Step 4: Simplify right side
    2,108.03x = 4,197,862.42
  5. Step 5: Solve for x
    x = 4,197,862.42/2,108.03
  6. Step 6: Final answer
    x = 1,991.37

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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.