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Finding the Fourth Proportional to 3,893.42, 5,373.02 and 2,125.05

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Solution

The fourth proportional to 3,893.42, 5,373.02 and 2,125.05 is: 2,932.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.42 : 5,373.02 = 2,125.05 : x
  2. Step 2: Convert to fraction form
    3,893.42/5,373.02 = 2,125.05/x
  3. Step 3: Cross multiply
    3,893.42x = 5,373.02 × 2,125.05
  4. Step 4: Simplify right side
    3,893.42x = 11,417,925.53
  5. Step 5: Solve for x
    x = 11,417,925.53/3,893.42
  6. Step 6: Final answer
    x = 2,932.62

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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.