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Finding the Fourth Proportional to 2,762.84, 3,811.12 and 1,767.76

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Solution

The fourth proportional to 2,762.84, 3,811.12 and 1,767.76 is: 2,438.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,762.84 : 3,811.12 = 1,767.76 : x
  2. Step 2: Convert to fraction form
    2,762.84/3,811.12 = 1,767.76/x
  3. Step 3: Cross multiply
    2,762.84x = 3,811.12 × 1,767.76
  4. Step 4: Simplify right side
    2,762.84x = 6,737,131.54
  5. Step 5: Solve for x
    x = 6,737,131.54/2,762.84
  6. Step 6: Final answer
    x = 2,438.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.