Home / 2,609.90-3,601.80-1,431.02

Finding the Fourth Proportional to 2,609.90, 3,601.80 and 1,431.02

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Solution

The fourth proportional to 2,609.90, 3,601.80 and 1,431.02 is: 1,974.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.90 : 3,601.80 = 1,431.02 : x
  2. Step 2: Convert to fraction form
    2,609.90/3,601.80 = 1,431.02/x
  3. Step 3: Cross multiply
    2,609.90x = 3,601.80 × 1,431.02
  4. Step 4: Simplify right side
    2,609.90x = 5,154,247.84
  5. Step 5: Solve for x
    x = 5,154,247.84/2,609.90
  6. Step 6: Final answer
    x = 1,974.88

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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.