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Finding the Fourth Proportional to 7,955.75, 10,978.94 and 4,419.29

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Solution

The fourth proportional to 7,955.75, 10,978.94 and 4,419.29 is: 6,098.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.75 : 10,978.94 = 4,419.29 : x
  2. Step 2: Convert to fraction form
    7,955.75/10,978.94 = 4,419.29/x
  3. Step 3: Cross multiply
    7,955.75x = 10,978.94 × 4,419.29
  4. Step 4: Simplify right side
    7,955.75x = 48,519,097.66
  5. Step 5: Solve for x
    x = 48,519,097.66/7,955.75
  6. Step 6: Final answer
    x = 6,098.62

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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.