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Finding the Fourth Proportional to 3,955.40, 5,927.70 and 2,635.40

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Solution

The fourth proportional to 3,955.40, 5,927.70 and 2,635.40 is: 3,949.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.40 : 5,927.70 = 2,635.40 : x
  2. Step 2: Convert to fraction form
    3,955.40/5,927.70 = 2,635.40/x
  3. Step 3: Cross multiply
    3,955.40x = 5,927.70 × 2,635.40
  4. Step 4: Simplify right side
    3,955.40x = 15,621,860.58
  5. Step 5: Solve for x
    x = 15,621,860.58/3,955.40
  6. Step 6: Final answer
    x = 3,949.50

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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.