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Finding the Fourth Proportional to 1,609.92, 2,408.64 and 1,395.84

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Solution

The fourth proportional to 1,609.92, 2,408.64 and 1,395.84 is: 2,088.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.92 : 2,408.64 = 1,395.84 : x
  2. Step 2: Convert to fraction form
    1,609.92/2,408.64 = 1,395.84/x
  3. Step 3: Cross multiply
    1,609.92x = 2,408.64 × 1,395.84
  4. Step 4: Simplify right side
    1,609.92x = 3,362,076.06
  5. Step 5: Solve for x
    x = 3,362,076.06/1,609.92
  6. Step 6: Final answer
    x = 2,088.35

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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.