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Finding the Fourth Proportional to 4,881.36, 7,315.54 and 2,802

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Solution

The fourth proportional to 4,881.36, 7,315.54 and 2,802 is: 4,199.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.36 : 7,315.54 = 2,802 : x
  2. Step 2: Convert to fraction form
    4,881.36/7,315.54 = 2,802/x
  3. Step 3: Cross multiply
    4,881.36x = 7,315.54 × 2,802
  4. Step 4: Simplify right side
    4,881.36x = 20,498,143.08
  5. Step 5: Solve for x
    x = 20,498,143.08/4,881.36
  6. Step 6: Final answer
    x = 4,199.27

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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.