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Finding the Fourth Proportional to 2,609.00, 3,600.30 and 1,561.64

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Solution

The fourth proportional to 2,609.00, 3,600.30 and 1,561.64 is: 2,154.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.00 : 3,600.30 = 1,561.64 : x
  2. Step 2: Convert to fraction form
    2,609.00/3,600.30 = 1,561.64/x
  3. Step 3: Cross multiply
    2,609.00x = 3,600.30 × 1,561.64
  4. Step 4: Simplify right side
    2,609.00x = 5,622,354.49
  5. Step 5: Solve for x
    x = 5,622,354.49/2,609.00
  6. Step 6: Final answer
    x = 2,154.99

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1.5x scale

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.