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Finding the Fourth Proportional to 7,886.98, 11,795.60 and 7,015.60

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Solution

The fourth proportional to 7,886.98, 11,795.60 and 7,015.60 is: 10,492.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.98 : 11,795.60 = 7,015.60 : x
  2. Step 2: Convert to fraction form
    7,886.98/11,795.60 = 7,015.60/x
  3. Step 3: Cross multiply
    7,886.98x = 11,795.60 × 7,015.60
  4. Step 4: Simplify right side
    7,886.98x = 82,753,211.36
  5. Step 5: Solve for x
    x = 82,753,211.36/7,886.98
  6. Step 6: Final answer
    x = 10,492.38

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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.