Home / 3,211.43-4,810.76-1,981.25

Finding the Fourth Proportional to 3,211.43, 4,810.76 and 1,981.25

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Solution

The fourth proportional to 3,211.43, 4,810.76 and 1,981.25 is: 2,967.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.43 : 4,810.76 = 1,981.25 : x
  2. Step 2: Convert to fraction form
    3,211.43/4,810.76 = 1,981.25/x
  3. Step 3: Cross multiply
    3,211.43x = 4,810.76 × 1,981.25
  4. Step 4: Simplify right side
    3,211.43x = 9,531,284.29
  5. Step 5: Solve for x
    x = 9,531,284.29/3,211.43
  6. Step 6: Final answer
    x = 2,967.93

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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.