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Finding the Fourth Proportional to 2,609.93, 3,601.68 and 1,431

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Solution

The fourth proportional to 2,609.93, 3,601.68 and 1,431 is: 1,974.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.93 : 3,601.68 = 1,431 : x
  2. Step 2: Convert to fraction form
    2,609.93/3,601.68 = 1,431/x
  3. Step 3: Cross multiply
    2,609.93x = 3,601.68 × 1,431
  4. Step 4: Simplify right side
    2,609.93x = 5,154,004.08
  5. Step 5: Solve for x
    x = 5,154,004.08/2,609.93
  6. Step 6: Final answer
    x = 1,974.77

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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.