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Finding the Fourth Proportional to 2,999.28, 4,500.72 and 1,356.72

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Solution

The fourth proportional to 2,999.28, 4,500.72 and 1,356.72 is: 2,035.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.28 : 4,500.72 = 1,356.72 : x
  2. Step 2: Convert to fraction form
    2,999.28/4,500.72 = 1,356.72/x
  3. Step 3: Cross multiply
    2,999.28x = 4,500.72 × 1,356.72
  4. Step 4: Simplify right side
    2,999.28x = 6,106,216.84
  5. Step 5: Solve for x
    x = 6,106,216.84/2,999.28
  6. Step 6: Final answer
    x = 2,035.89

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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.