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Finding the Fourth Proportional to 2,526.49, 3,790.29 and 771.64

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Solution

The fourth proportional to 2,526.49, 3,790.29 and 771.64 is: 1,157.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,526.49 : 3,790.29 = 771.64 : x
  2. Step 2: Convert to fraction form
    2,526.49/3,790.29 = 771.64/x
  3. Step 3: Cross multiply
    2,526.49x = 3,790.29 × 771.64
  4. Step 4: Simplify right side
    2,526.49x = 2,924,739.38
  5. Step 5: Solve for x
    x = 2,924,739.38/2,526.49
  6. Step 6: Final answer
    x = 1,157.63

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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.