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Finding the Fourth Proportional to 3,904.02, 5,376.57 and 3,891.84

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Solution

The fourth proportional to 3,904.02, 5,376.57 and 3,891.84 is: 5,359.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.02 : 5,376.57 = 3,891.84 : x
  2. Step 2: Convert to fraction form
    3,904.02/5,376.57 = 3,891.84/x
  3. Step 3: Cross multiply
    3,904.02x = 5,376.57 × 3,891.84
  4. Step 4: Simplify right side
    3,904.02x = 20,924,750.19
  5. Step 5: Solve for x
    x = 20,924,750.19/3,904.02
  6. Step 6: Final answer
    x = 5,359.80

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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.