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Finding the Fourth Proportional to 2,800.62, 4,200.30 and 1,068.84

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Solution

The fourth proportional to 2,800.62, 4,200.30 and 1,068.84 is: 1,603.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.62 : 4,200.30 = 1,068.84 : x
  2. Step 2: Convert to fraction form
    2,800.62/4,200.30 = 1,068.84/x
  3. Step 3: Cross multiply
    2,800.62x = 4,200.30 × 1,068.84
  4. Step 4: Simplify right side
    2,800.62x = 4,489,448.65
  5. Step 5: Solve for x
    x = 4,489,448.65/2,800.62
  6. Step 6: Final answer
    x = 1,603.02

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.