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Finding the Fourth Proportional to 4,638.82, 6,958.13 and 1,128.84

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Solution

The fourth proportional to 4,638.82, 6,958.13 and 1,128.84 is: 1,693.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,638.82 : 6,958.13 = 1,128.84 : x
  2. Step 2: Convert to fraction form
    4,638.82/6,958.13 = 1,128.84/x
  3. Step 3: Cross multiply
    4,638.82x = 6,958.13 × 1,128.84
  4. Step 4: Simplify right side
    4,638.82x = 7,854,609.83
  5. Step 5: Solve for x
    x = 7,854,609.83/4,638.82
  6. Step 6: Final answer
    x = 1,693.24

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1.5x scale

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.