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Finding the Fourth Proportional to 7,903.31, 11,851.04 and 2,636.51

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Solution

The fourth proportional to 7,903.31, 11,851.04 and 2,636.51 is: 3,953.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.31 : 11,851.04 = 2,636.51 : x
  2. Step 2: Convert to fraction form
    7,903.31/11,851.04 = 2,636.51/x
  3. Step 3: Cross multiply
    7,903.31x = 11,851.04 × 2,636.51
  4. Step 4: Simplify right side
    7,903.31x = 31,245,313.03
  5. Step 5: Solve for x
    x = 31,245,313.03/7,903.31
  6. Step 6: Final answer
    x = 3,953.45

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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.