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Finding the Fourth Proportional to 2,328.60, 3,493.51 and 768.84

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Solution

The fourth proportional to 2,328.60, 3,493.51 and 768.84 is: 1,153.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,328.60 : 3,493.51 = 768.84 : x
  2. Step 2: Convert to fraction form
    2,328.60/3,493.51 = 768.84/x
  3. Step 3: Cross multiply
    2,328.60x = 3,493.51 × 768.84
  4. Step 4: Simplify right side
    2,328.60x = 2,685,950.23
  5. Step 5: Solve for x
    x = 2,685,950.23/2,328.60
  6. Step 6: Final answer
    x = 1,153.46

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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.