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Finding the Fourth Proportional to 4,810.86, 7,211.88 and 1,891.26

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Solution

The fourth proportional to 4,810.86, 7,211.88 and 1,891.26 is: 2,835.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,810.86 : 7,211.88 = 1,891.26 : x
  2. Step 2: Convert to fraction form
    4,810.86/7,211.88 = 1,891.26/x
  3. Step 3: Cross multiply
    4,810.86x = 7,211.88 × 1,891.26
  4. Step 4: Simplify right side
    4,810.86x = 13,639,540.17
  5. Step 5: Solve for x
    x = 13,639,540.17/4,810.86
  6. Step 6: Final answer
    x = 2,835.16

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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.