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Finding the Fourth Proportional to 2,406.84, 3,610.26 and 763.50

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Solution

The fourth proportional to 2,406.84, 3,610.26 and 763.50 is: 1,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,406.84 : 3,610.26 = 763.50 : x
  2. Step 2: Convert to fraction form
    2,406.84/3,610.26 = 763.50/x
  3. Step 3: Cross multiply
    2,406.84x = 3,610.26 × 763.50
  4. Step 4: Simplify right side
    2,406.84x = 2,756,433.51
  5. Step 5: Solve for x
    x = 2,756,433.51/2,406.84
  6. Step 6: Final answer
    x = 1,145.25

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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.