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Finding the Fourth Proportional to 2,715.00, 4,069.74 and 1,069.28

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Solution

The fourth proportional to 2,715.00, 4,069.74 and 1,069.28 is: 1,602.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.00 : 4,069.74 = 1,069.28 : x
  2. Step 2: Convert to fraction form
    2,715.00/4,069.74 = 1,069.28/x
  3. Step 3: Cross multiply
    2,715.00x = 4,069.74 × 1,069.28
  4. Step 4: Simplify right side
    2,715.00x = 4,351,713.40
  5. Step 5: Solve for x
    x = 4,351,713.40/2,715.00
  6. Step 6: Final answer
    x = 1,602.84

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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.