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Finding the Fourth Proportional to 3,860.84, 5,320.82 and 2,741.82

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Solution

The fourth proportional to 3,860.84, 5,320.82 and 2,741.82 is: 3,778.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.84 : 5,320.82 = 2,741.82 : x
  2. Step 2: Convert to fraction form
    3,860.84/5,320.82 = 2,741.82/x
  3. Step 3: Cross multiply
    3,860.84x = 5,320.82 × 2,741.82
  4. Step 4: Simplify right side
    3,860.84x = 14,588,730.69
  5. Step 5: Solve for x
    x = 14,588,730.69/3,860.84
  6. Step 6: Final answer
    x = 3,778.64

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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.