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Finding the Fourth Proportional to 7,015.76, 10,523.64 and 3,119.12

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Solution

The fourth proportional to 7,015.76, 10,523.64 and 3,119.12 is: 4,678.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.76 : 10,523.64 = 3,119.12 : x
  2. Step 2: Convert to fraction form
    7,015.76/10,523.64 = 3,119.12/x
  3. Step 3: Cross multiply
    7,015.76x = 10,523.64 × 3,119.12
  4. Step 4: Simplify right side
    7,015.76x = 32,824,496.00
  5. Step 5: Solve for x
    x = 32,824,496.00/7,015.76
  6. Step 6: Final answer
    x = 4,678.68

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Similar ratio
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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.