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Finding the Fourth Proportional to 4,855.28, 7,283 and 1,392.53

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Solution

The fourth proportional to 4,855.28, 7,283 and 1,392.53 is: 2,088.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,855.28 : 7,283 = 1,392.53 : x
  2. Step 2: Convert to fraction form
    4,855.28/7,283 = 1,392.53/x
  3. Step 3: Cross multiply
    4,855.28x = 7,283 × 1,392.53
  4. Step 4: Simplify right side
    4,855.28x = 10,141,795.99
  5. Step 5: Solve for x
    x = 10,141,795.99/4,855.28
  6. Step 6: Final answer
    x = 2,088.82

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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.