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Finding the Fourth Proportional to 2,300, 3,450.36 and 761.36

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Solution

The fourth proportional to 2,300, 3,450.36 and 761.36 is: 1,142.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,300 : 3,450.36 = 761.36 : x
  2. Step 2: Convert to fraction form
    2,300/3,450.36 = 761.36/x
  3. Step 3: Cross multiply
    2,300x = 3,450.36 × 761.36
  4. Step 4: Simplify right side
    2,300x = 2,626,966.09
  5. Step 5: Solve for x
    x = 2,626,966.09/2,300
  6. Step 6: Final answer
    x = 1,142.16

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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.