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Finding the Fourth Proportional to 1,941.76, 2,913.90 and 846.82

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Solution

The fourth proportional to 1,941.76, 2,913.90 and 846.82 is: 1,270.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.76 : 2,913.90 = 846.82 : x
  2. Step 2: Convert to fraction form
    1,941.76/2,913.90 = 846.82/x
  3. Step 3: Cross multiply
    1,941.76x = 2,913.90 × 846.82
  4. Step 4: Simplify right side
    1,941.76x = 2,467,548.80
  5. Step 5: Solve for x
    x = 2,467,548.80/1,941.76
  6. Step 6: Final answer
    x = 1,270.78

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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.