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Finding the Fourth Proportional to 2,509.68, 3,764.88 and 1,277.88

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Solution

The fourth proportional to 2,509.68, 3,764.88 and 1,277.88 is: 1,917.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,509.68 : 3,764.88 = 1,277.88 : x
  2. Step 2: Convert to fraction form
    2,509.68/3,764.88 = 1,277.88/x
  3. Step 3: Cross multiply
    2,509.68x = 3,764.88 × 1,277.88
  4. Step 4: Simplify right side
    2,509.68x = 4,811,064.85
  5. Step 5: Solve for x
    x = 4,811,064.85/2,509.68
  6. Step 6: Final answer
    x = 1,917.00

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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.