Home / 4,758.89-7,138.81-1,638.48

Finding the Fourth Proportional to 4,758.89, 7,138.81 and 1,638.48

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Solution

The fourth proportional to 4,758.89, 7,138.81 and 1,638.48 is: 2,457.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,758.89 : 7,138.81 = 1,638.48 : x
  2. Step 2: Convert to fraction form
    4,758.89/7,138.81 = 1,638.48/x
  3. Step 3: Cross multiply
    4,758.89x = 7,138.81 × 1,638.48
  4. Step 4: Simplify right side
    4,758.89x = 11,696,781.46
  5. Step 5: Solve for x
    x = 11,696,781.46/4,758.89
  6. Step 6: Final answer
    x = 2,457.88

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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.