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Finding the Fourth Proportional to 7,015.16, 10,520 and 2,630.22

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Solution

The fourth proportional to 7,015.16, 10,520 and 2,630.22 is: 3,944.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.16 : 10,520 = 2,630.22 : x
  2. Step 2: Convert to fraction form
    7,015.16/10,520 = 2,630.22/x
  3. Step 3: Cross multiply
    7,015.16x = 10,520 × 2,630.22
  4. Step 4: Simplify right side
    7,015.16x = 27,669,914.40
  5. Step 5: Solve for x
    x = 27,669,914.40/7,015.16
  6. Step 6: Final answer
    x = 3,944.30

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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.