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Finding the Fourth Proportional to 3,939.03, 5,903.15 and 3,820.77

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Solution

The fourth proportional to 3,939.03, 5,903.15 and 3,820.77 is: 5,725.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.03 : 5,903.15 = 3,820.77 : x
  2. Step 2: Convert to fraction form
    3,939.03/5,903.15 = 3,820.77/x
  3. Step 3: Cross multiply
    3,939.03x = 5,903.15 × 3,820.77
  4. Step 4: Simplify right side
    3,939.03x = 22,554,559.32
  5. Step 5: Solve for x
    x = 22,554,559.32/3,939.03
  6. Step 6: Final answer
    x = 5,725.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.