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Finding the Fourth Proportional to 3,995.40, 5,995.80 and 2,605.35

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Solution

The fourth proportional to 3,995.40, 5,995.80 and 2,605.35 is: 3,909.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.40 : 5,995.80 = 2,605.35 : x
  2. Step 2: Convert to fraction form
    3,995.40/5,995.80 = 2,605.35/x
  3. Step 3: Cross multiply
    3,995.40x = 5,995.80 × 2,605.35
  4. Step 4: Simplify right side
    3,995.40x = 15,621,157.53
  5. Step 5: Solve for x
    x = 15,621,157.53/3,995.40
  6. Step 6: Final answer
    x = 3,909.79

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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.