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Finding the Fourth Proportional to 2,526.94, 3,789.80 and 771.47

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Solution

The fourth proportional to 2,526.94, 3,789.80 and 771.47 is: 1,157.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,526.94 : 3,789.80 = 771.47 : x
  2. Step 2: Convert to fraction form
    2,526.94/3,789.80 = 771.47/x
  3. Step 3: Cross multiply
    2,526.94x = 3,789.80 × 771.47
  4. Step 4: Simplify right side
    2,526.94x = 2,923,694.20
  5. Step 5: Solve for x
    x = 2,923,694.20/2,526.94
  6. Step 6: Final answer
    x = 1,157.01

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1.5x scale

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.