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Finding the Fourth Proportional to 7,955.26, 10,978.50 and 4,418.80

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Solution

The fourth proportional to 7,955.26, 10,978.50 and 4,418.80 is: 6,098.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.26 : 10,978.50 = 4,418.80 : x
  2. Step 2: Convert to fraction form
    7,955.26/10,978.50 = 4,418.80/x
  3. Step 3: Cross multiply
    7,955.26x = 10,978.50 × 4,418.80
  4. Step 4: Simplify right side
    7,955.26x = 48,511,795.80
  5. Step 5: Solve for x
    x = 48,511,795.80/7,955.26
  6. Step 6: Final answer
    x = 6,098.08

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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.