Home / 5,091.64-7,638.72-1,628.89

Finding the Fourth Proportional to 5,091.64, 7,638.72 and 1,628.89

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Solution

The fourth proportional to 5,091.64, 7,638.72 and 1,628.89 is: 2,443.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091.64 : 7,638.72 = 1,628.89 : x
  2. Step 2: Convert to fraction form
    5,091.64/7,638.72 = 1,628.89/x
  3. Step 3: Cross multiply
    5,091.64x = 7,638.72 × 1,628.89
  4. Step 4: Simplify right side
    5,091.64x = 12,442,634.62
  5. Step 5: Solve for x
    x = 12,442,634.62/5,091.64
  6. Step 6: Final answer
    x = 2,443.74

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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.