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Finding the Fourth Proportional to 7,980.64, 11,014.26 and 4,836.82

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Solution

The fourth proportional to 7,980.64, 11,014.26 and 4,836.82 is: 6,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.64 : 11,014.26 = 4,836.82 : x
  2. Step 2: Convert to fraction form
    7,980.64/11,014.26 = 4,836.82/x
  3. Step 3: Cross multiply
    7,980.64x = 11,014.26 × 4,836.82
  4. Step 4: Simplify right side
    7,980.64x = 53,273,993.05
  5. Step 5: Solve for x
    x = 53,273,993.05/7,980.64
  6. Step 6: Final answer
    x = 6,675.40

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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.