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Finding the Fourth Proportional to 3,885.75, 5,362.56 and 2,926.94

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Solution

The fourth proportional to 3,885.75, 5,362.56 and 2,926.94 is: 4,039.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.75 : 5,362.56 = 2,926.94 : x
  2. Step 2: Convert to fraction form
    3,885.75/5,362.56 = 2,926.94/x
  3. Step 3: Cross multiply
    3,885.75x = 5,362.56 × 2,926.94
  4. Step 4: Simplify right side
    3,885.75x = 15,695,904.77
  5. Step 5: Solve for x
    x = 15,695,904.77/3,885.75
  6. Step 6: Final answer
    x = 4,039.35

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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.