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Finding the Fourth Proportional to 4,951.81, 6,840.62 and 3,955.78

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Solution

The fourth proportional to 4,951.81, 6,840.62 and 3,955.78 is: 5,464.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,951.81 : 6,840.62 = 3,955.78 : x
  2. Step 2: Convert to fraction form
    4,951.81/6,840.62 = 3,955.78/x
  3. Step 3: Cross multiply
    4,951.81x = 6,840.62 × 3,955.78
  4. Step 4: Simplify right side
    4,951.81x = 27,059,987.78
  5. Step 5: Solve for x
    x = 27,059,987.78/4,951.81
  6. Step 6: Final answer
    x = 5,464.67

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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.