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Finding the Fourth Proportional to 7,368.10, 11,051.88 and 1,821.40

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Solution

The fourth proportional to 7,368.10, 11,051.88 and 1,821.40 is: 2,732.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,368.10 : 11,051.88 = 1,821.40 : x
  2. Step 2: Convert to fraction form
    7,368.10/11,051.88 = 1,821.40/x
  3. Step 3: Cross multiply
    7,368.10x = 11,051.88 × 1,821.40
  4. Step 4: Simplify right side
    7,368.10x = 20,129,894.23
  5. Step 5: Solve for x
    x = 20,129,894.23/7,368.10
  6. Step 6: Final answer
    x = 2,732.03

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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.