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Finding the Fourth Proportional to 4,042.50, 5,578.65 and 2,800.50

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Solution

The fourth proportional to 4,042.50, 5,578.65 and 2,800.50 is: 3,864.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,042.50 : 5,578.65 = 2,800.50 : x
  2. Step 2: Convert to fraction form
    4,042.50/5,578.65 = 2,800.50/x
  3. Step 3: Cross multiply
    4,042.50x = 5,578.65 × 2,800.50
  4. Step 4: Simplify right side
    4,042.50x = 15,623,009.33
  5. Step 5: Solve for x
    x = 15,623,009.33/4,042.50
  6. Step 6: Final answer
    x = 3,864.69

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.