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Finding the Fourth Proportional to 3,051.98, 4,571.48 and 2,821.40

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Solution

The fourth proportional to 3,051.98, 4,571.48 and 2,821.40 is: 4,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.98 : 4,571.48 = 2,821.40 : x
  2. Step 2: Convert to fraction form
    3,051.98/4,571.48 = 2,821.40/x
  3. Step 3: Cross multiply
    3,051.98x = 4,571.48 × 2,821.40
  4. Step 4: Simplify right side
    3,051.98x = 12,897,973.67
  5. Step 5: Solve for x
    x = 12,897,973.67/3,051.98
  6. Step 6: Final answer
    x = 4,226.10

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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.